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Comprehensive Summary: In recent years, there has been a shift towards using non‐fullerene electron acceptors in organic solar cells (OSCs) as a replacement for fullerene derivatives. This change requires polymer donors that possess compatible physical properties, such as absorption range, HOMO energy level, miscibility, and crystallinity. Moreover, the high cost and poor batch‐to‐batch reproducibility of polymer donors also hinder future large‐scale manufacturing. These emphasize the need to explore alternative types of polymer donors. The imide‐functionalized building units possess several key attributes that make their polymers highly promising for non‐fullerene OSCs. These attributes include ease of synthesis, strong electron‐withdrawing ability, rigid and co‐planar structure, and the ability to easily tune solubility through imide side chains. In this review, we summarized the synthetic routes of imide building units, and the structural evolution of imide‐functionalized polymer donors by focusing on the effects of polymer structure on their physical, optoelectronic, and photovoltaic properties. We hope that this mini‐review will serve as a catalyst for future research on imide‐functionalized polymers toward high‐performance, cost‐effective, and durable organic solar cells (OSCs). [ABSTRACT FROM AUTHOR]

Terminal aluminium and gallium imides of the type K[(NON)M(NR)], bearing heteroatom substituents at R, have been synthesised via reactions of anionic aluminium(I) and gallium(I) reagents with silyl and boryl azides (NON=4,5‐bis(2,6‐diisopropyl‐anilido)‐2,7‐di‐tert‐butyl‐9,9‐dimethyl‐xanthene). These systems vary significantly in their lability in solution: the N(SiiPr3) and N(Boryl) complexes are very labile, on account of the high basicity at nitrogen. Phenylsilylimido derivatives provide greater stabilization through the π‐acceptor capabilities of the SiR3 group. K[(NON)AlN(SitBuPh2)] offers a workable compromise between stability and solubility, and has been completely characterized by spectroscopic, analytical and crystallographic methods. The silylimide species examined feature minimal π‐bonding between the imide ligand and aluminium/gallium, with the HOMO and HOMO‐1 orbitals effectively comprising orthogonal lone pairs centred at N. Reactivity‐wise, both aluminium and gallium silylimides can act as viable sources of nitride, [N]3−, with systems derived from either metal reacting with CO to afford cyanide complexes. By contrast, only the gallium system K[(NON)Ga{N(SiPh3)}] is capable of effecting a similar transformation with N2O to yield azide, N3−, via formal oxide/nitride metathesis. The aluminium systems instead generate RN3 via transfer of the imide fragment [RN]2−. [ABSTRACT FROM AUTHOR]

Di‐ and multinuclear hafnium complexes bridged by ligands have been rarely reported. In this article, a novel 3,5‐disubstituted pyrazolate‐bridged ligand LH5 with two [N2N]2−‐type chelating side arms was designed and synthesized, which supported a series of dinuclear hafnium complexes. Dinuclear hafnium azides [LHf2(μ‐1,1‐N3)2(N3)2][Na(THF)4] 3 and [LHf2(μ‐1,1‐N3)2(N3)2][Na(2,2,2‐Kryptofix)] 4 were further synthesized and structurally characterized, featuring two sets of terminal and bridging azido ligands like jellyfishes. The reactivity of 3 under reduction conditions was conducted, leading to a formation of a tetranuclear hafnium imido complex [L1Hf2(μ1‐NH)(N3){μ2‐K}]25. DFT calculations revealed that the mixed imido azide 5 was generated via an intramolecular C−H insertion from a putative dinuclear HfIV‐nitridyl intermediate. [ABSTRACT FROM AUTHOR]

A new method for making use of the catalytic ending PdII-H for the relay-catalytic cycle for dicarbonylation of amines has been developed in a buffer condition, which shows an excellent compatible ability to allow two incompatible catalytic systems working simultaneously in the same catalytic system. [Display omitted] • A novel method for making use of the catalytic ending PdII-H into the next relay-catalytic cycle for dicarbonylation of amines in a buffer condition has been developed. • Two incompatible catalytic systems to work simultaneously in the same catalytic system. • This protocol features excellent regioselectivity and broad substrate scope. A new method for making use of the catalytic ending PdII-H for the relay-catalytic cycle for dicarbonylation of amines has been developed in a buffer condition, which shows an excellent compatible ability to allow two incompatible catalytic systems working simultaneously in the same catalytic system. This protocol features excellent regioselectivity and broad substrate scope. Our combined experimental and computational studies indicated that the reaction proceeds through a Pd0/PdII-H relay-catalytic cycle. [ABSTRACT FROM AUTHOR]

The reactions of a terminal aluminium imide with a range of oxygen‐containing substrates have been probed with a view to developing its use as a novel main group transfer agent for the [NR]2− fragment. We demonstrate transfer of the imide moiety to [N2], [CO] and [Ph(H)C] units driven thermodynamically by Al−O bond formation. N2O reacts rapidly to generate the organoazide DippN3 (Dipp=2,6‐iPr2C6H3), while CO2 (under dilute reaction conditions) yields the corresponding isocyanate, DippNCO. Mechanistic studies, using both experimental and quantum chemical techniques, identify a carbamate complex K2[(NON)Al‐{κ2−(N,O)−N(Dipp)CO2}]2 (formed via [2+2] cycloaddition) as an intermediate in the formation of DippNCO, and also in an alternative reaction leading to the generation of the amino−dicarboxylate complex K2[(NON)Al{κ2−(O,O′)−(O2C)2N‐(Dipp)}] (via the take‐up of a second equivalent of CO2). In the case of benzaldehyde, a similar [2+2] cycloaddition process generates the metallacyclic hemi‐aminal complex, Kn[(NON)Al{κ2−(N,O)−(N(Dipp)C(Ph)(H)O}]n. Extrusion of the imine, PhC(H)NDipp, via cyclo‐reversion is disfavoured thermally, due to the high energy of the putative aluminium oxide co‐product, K2[(NON)Al(O)]2. However, addition of CO2 allows the imine to be released, driven by the formation of the thermodynamically more stable aluminium carbonate co‐product, K2[(NON)Al(κ2−(O,O′)−CO3)]2. [ABSTRACT FROM AUTHOR]

• Chloride modification accelerate electron injection. • Chloride modification position is critical for ion migration. • The dense and smooth film facilitate better electrochemical behavior. • Supercapacitor had high cycle stability, maintaining 78% after 10,000 cycles. Ambipolar conducting polymer electrode materials exhibit a wide voltage window, contributing to fast development of high-energy–density storage devices. The doping levels of p-doped and n-doped in ambipolar conducting polymers determine the electrochemical performance of energy storage devices. However, n-doped materials always face low doping efficiency, caused by difficulty in electron injection and ion migration, thereby affecting specific capacitance and stability. In this study, two ambipolar conductive polymers were developed, in which the n-doped imine group was chlorinated to improve electron injection, and the mechanism of ion migration process was studied by changing the chlorination of different positions relative to the carbonyl group. The influence of chloride modification on n-doped electrochemical energy storage was thoroughly investigated. The results show that chloride modification can lower the lowest unoccupied molecular orbital (LUMO) energy level of the monomer and make electron injection easier. Interestingly, the chloride modification position not only affects the oxidation–reduction of the carbonyl, but also the binding of the carbonyl with lithium ions. If the chloride modification position is too close to the carbonyl, lithium-ion migration in ambipolar conducting polymer will be restricted, although electron injection is beneficial. Based on this design, the developed PEPCl conducting polymer exhibits excellent electrochemical performance, and the mechanism of chlorination modification of ambipolar polymer electrode materials is described. [ABSTRACT FROM AUTHOR]

Cycloaliphatic epoxy resin exhibits excellent comprehensive properties suitable for application in electrical/electronic materials. However, its combustibility issue is more difficult to be handled in nature than aromatic epoxy resins and has not yet well addressed currently. The synergistic effect of multiple structures is the efficient way to solve this problem. Therefore, a novel cycloaliphatic epoxide monomer containing both imide and phosphate groups was designed via imidization and epoxidation in this study. The epoxide monomer BEMP with high purity was obtained by discussing the epoxidation conditions. Using 4-methyltetrahydrophthalic anhydride (MHHPA) as a hardener, the cured epoxy resin BMEP/MHHPA demonstrated inherently outstanding flame retardancy with a high limited oxygen index (LOI) value of 36.5% and achieved UL-94 V-0 rating. Additionally, BMEP/MHHPA showed a significant reduction of 70.5% in heat release rate (HRR) and 57.7% in total heat release (THR) compared to commercial ERL-4221/MHHPA. The synergistic effect of imide and phosphate groups contributed to strong charring ability and intumescent flame-retardant action, resulting in effectively isolating heat and oxygen, and inhibiting the production of volatile flammable components. This approach provides an efficient method for developing highly fire-safe cycloaliphatic epoxides for use in electrical/electronic applications. [Display omitted] • A cycloaliphatic epoxide monomer BMEP containing imide and phosphate groups was synthesized. • BMEP/MHHPA cured resins was hard to be ignited with an LOI value of 36.5%. • Heat release of BMEP/MHHPA was greatly reduced compared with commercial epoxy resins. • BMEP/MHHPA showed exceptional intumescent flame-retardant action. [ABSTRACT FROM AUTHOR]

The Mannich reaction under the action of secondary amines and paraformaldehyde in the presence of a CuCl catalyst was used to synthesize N-aminomethyl derivatives of methyl maleopimarimide ester. [ABSTRACT FROM AUTHOR]

Synthesis of Antiviral Compounds At the first stage, we successfully reproduced the scheme for the synthesis of the lead-compound B 2a b [[14]] and tried to modify the binding groups and their effect on the antiviral properties of obtained compounds (Scheme 1). Taking into account the propensity of the imide fragment to hydrolysis reactions, including in physiological media, we synthesized non-imide analogs of compound B 2a b and gave compound B 4 b as a potent ligand (first hit). In this regard, it should be concluded that in the course of the work carried out on the medicinal-chemistry modification of the lead-compound, two new, highly active compounds were identified that are superior in activity to compound B 2 b against the Coxsackievirus B3 Nancy. Keywords: enteroviruses; capsid binders; screening; imide; aminobenzoic acid; heterocycles EN enteroviruses capsid binders screening imide aminobenzoic acid heterocycles 1832 14 11/17/22 20221101 NES 221101 1. [Extracted from the article]

Herein, a three component Catellani‐type reaction catalyzed by the Palladium/Norbornene/CuI (Pd/NBE/CuI) cooperative system by using N‐acylph‐thalimides as acyl electrophiles is reported, which gives access to a series of aromatic ketones. The transformation is performable in the presence of water, albeit with decreased reaction yield. The additive CuI was crucial to facilitate the cleavage of C(O)−N bond of imide. This protocol showed broad substrate scope: both alkyl and aryl acyl groups could be installed at the ortho‐position of aryl iodides; alkenes and boronic acids can be used as termination reagents. [ABSTRACT FROM AUTHOR]

N-type organic semiconductors are of great importance for organic electronics. Nevertheless, the development of n-type organic semiconductors is far lagged than its counterpart of p-type organic semiconductors. Herein, a linear acenaphthene-imide-fused pyrazinacene-quinone (AIPQ) with high planarity is readily prepared via a two-fold condensation reaction. The incorporation of electron-withdrawing groups of imide, imine (C = N), and carbonyl (C = O) groups lowers the LUMO energy level of AIPQ to −4.12 eV, making it a promising candidate for n-type organic semiconductors. [ABSTRACT FROM AUTHOR]

The molecular design of a wide-bandgap polymer donor is critical to achieve high-performance organic photovoltaic devices. Herein, a new dibenzo-fused quinoxalineimide (BPQI) is successfully synthesized as an electron-deficient building block to construct donor–acceptor (D–A)-type polymers, namely P(BPQI-BDT) and P(BPQI-BDTT), using benzodithiophene and its derivative, which bears different side chains, as the copolymerization units. These two polymers are used as a donor, and the narrow bandgap (2,20-((2Z,20Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo [3,4-e]thieno[2,″30′:4′,50]thieno[20,30:4,5]pyrrolo[3,2g]thieno[20,30:4,5]thieno[3,2-b]indole-2,10 diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile) Y6 is used as an acceptor to fabricate bulk heterojunction polymer solar cell devices. Y6, as a non-fullerene receptor (NFA), has excellent electrochemical and optical properties, as well as a high efficiency of over 18%. The device, based on P(BPQI-BDTT):Y6, showed power conversion efficiencies (PCEs) of 6.31% with a JSC of 17.09 mA cm−2, an open-circuit voltage (VOC) of 0.82 V, and an FF of 44.78%. This study demonstrates that dibenzo-fused quinoxalineimide is a promising building block for developing wide-bandgap polymer donors. [ABSTRACT FROM AUTHOR]

An efficient method for the phosphine-catalyzed bisaddition of P(O)H compounds and cyclic imides to divinyl sulfone has been developed. The reaction proceeds under mild conditions and leads to the formation of the corresponding target products in high yield. The mono- and bisphosphonium salts have been obtained in high yield on the basis of divinyl sulfone. [ABSTRACT FROM AUTHOR]

Phytochemical profiling of the CH2Cl2 extract of the culture broth of a thermotolerant polyester-degrading actinomycete Actinomadura miaoliensis by a combination of column chromatography and preparative TLC afforded one new imide, called miaolimide (1). The structures were established by extensive spectroscopic analyses including 1D and 2D NMR (COSY, HSQC, and HMBC), and HR-ESI-MS, and by comparison with published data. [ABSTRACT FROM AUTHOR]

[Display omitted] • A series of imide-fused phenacenes were photochemically synthesized. • The imide-fused phenacenes showed apparent positive solvatofluorochromism due to their ICT characteristics. • Correlations between the Stokes shifts and conventional solvent polarity parameters revealed contribution form highly polar fluorescing state to the solvatofluorochromism. • An amino-substituted chrysene-imide produced red fluorescence with huge Stokes shift in toluene. • The present results provide a molecular design strategy of functionalized fluorophores utilizing phenacenes as the π platform. Chrysenes, picene, fulminene, modified with imide, bromo, and amino functionalities, were synthesized through Mallory photoreaction as the key step, and their electronic spectra were investigated. Fluorescence spectra of chrysene-diimide CHRDI and bromo-substituted phencanene-imides, BrCHRI , BrPICI , BrFULI were dependent on solvent polarity to display appreciable fluorescence color changes. The solvatofluorochromic behavior was analyzed by conventional relationships between Stokes shift and solvent polarity parameters, such as Lippert-Mataga and Bilot-Kawski equations. The results indicated that the solvatofluorochromism was derived from the intramolecular charge transfer (ICT) nature in the excited state. Theoretical studies using time-dependent density-functional theory revealed that the phenacene-imide molecules in the fluorescent state possessed ICT characters between the strongly electron-withdrawing imide moiety and moderately electron-donating phenacene cores. Amino-substituted chrysene-imide NH 2 CHRI showed fluorescence band in a red region (λ FL = 618 nm) in toluene with a very large Stokes shift (Δ ν ∼ = 7630 cm−1) suggesting that the molecule in the fluorescent state was highly polarized. The present results indicate that phenacenes would provide potential platforms for constructing future functional fluorophores through an appropriate functionalization. [ABSTRACT FROM AUTHOR]

A rhodium(III)‐based catalytic system has been used to develop a C−H bond activation of benzaldehyde derivatives and subsequent functionalization with dioxazolones in order to afford imides. The importance of the nature of the directing group to perform selectively the aldehydic C−H bond activation has been highlighted. The scope investigation showed that this transformation could be applied to various dioxazolones and many benzaldehyde derivatives as well as an acrolein derivative. Derivatization reactions of the imide products demonstrated the synthetic utility of this rhodium‐catalyzed aldehydic C−H amidation. [ABSTRACT FROM AUTHOR]

A practical route is described for the preparation of α‐imido‐β‐diarylphosphorylpropanoates based on the phosphine‐catalyzed α‐umpolung/β‐Michael addition reaction. One of the products has been tested for coordination the Gd3+ cation using NMR relaxation method in solution and by IR spectroscopy to solids. The exact structures of two isomers of the obtained complex have been determined by single crystal analysis. The structures of all isomers were investigated by quantum‐chemical calculations in solution. Quantum‐chemical calculations results show the presence of stereoselective effect in solution: the trans‐isomer with two ligands having different chirality is energetically more favorable. The cis‐isomer with ligands of different chirality is the least advantageous in terms of energy and therefore presents in solution in small amounts. The cis‐ and trans‐isomers with two ligands of the same chirality are very close in energy but are somewhat inferior to the most stable isomer. [ABSTRACT FROM AUTHOR]

Wir berichten über die Synthese trigonaler Imidylcobaltkomplexe [Co(NAryl)L2]−, (L=N(Dipp)SiMe3, Dipp=2,6‐Diisopropylphenyl), mit sehr langen Co‐NAryl‐Bindungen von etwa 1.75 Å. Ihre elektronische Struktur wurde mit einer Vielzahl von physikalischen und spektroskopischen Methoden wie EPR oder Röntgenabsorptionsspektroskopie untersucht, was zu ihrer Beschreibung als höchst ungewöhnliche Imidylcobaltkomplexe führt. Computergestützte Analysen bestätigen diese Ergebnisse und zeigen weiter, dass der High‐Spin‐Zustand für den Imidylcharakter verantwortlich ist. Der Austausch des Dipp‐Substituenten am Imid durch die kleinere Mesitylfunktion (2,4,6‐Trimethylphenyl) bewirkt die unerwartete Me3Si‐Verschiebung vom Ligandenrückgrat zum Imidylstickstoff und offenbart einen hochreaktiven, nukleophilen Charakter der Imidyleinheit. [ABSTRACT FROM AUTHOR]

The title compounds, C19H12Br2N2O2 and C18H11Br2N3O2, were synthesized in good yields from condensation reactions of 3-bromo­benzoyl chloride with 2-amino­pyridine or 2-amino­pyrimidine using standard condensation reaction conditions and subsequent column chromatography. [ABSTRACT FROM AUTHOR]

Anionic molecular imide complexes of aluminium are accessible via a rational synthetic approach involving the reactions of organo azides with a potassium aluminyl reagent. In the case of K2[(NON)Al(NDipp)]2 (NON=4,5‐bis(2,6‐diisopropylanilido)‐2,7‐di‐tert‐butyl‐9,9‐dimethyl‐xanthene; Dipp=2,6‐diisopropylphenyl) structural characterization by X‐ray crystallography reveals a short Al−N distance, which is thought primarily to be due to the low coordinate nature of the nitrogen centre. The Al−N unit is highly polar, and capable of the activation of relatively inert chemical bonds, such as those found in dihydrogen and carbon monoxide. In the case of CO, uptake of two molecules of the substrate leads to C−C coupling and C≡O bond cleavage. Thermodynamically, this is driven, at least in part, by Al−O bond formation. Mechanistically, a combination of quantum chemical and experimental observations suggests that the reaction proceeds via exchange of the NR and O substituents through intermediates featuring an aluminium‐bound isocyanate fragment. [ABSTRACT FROM AUTHOR]

Anionic molecular imide complexes of aluminium are accessible via a rational synthetic approach involving the reactions of organo azides with a potassium aluminyl reagent. In the case of K2[(NON)Al(NDipp)]2 (NON=4,5‐bis(2,6‐diisopropylanilido)‐2,7‐di‐tert‐butyl‐9,9‐dimethyl‐xanthene; Dipp=2,6‐diisopropylphenyl) structural characterization by X‐ray crystallography reveals a short Al−N distance, which is thought primarily to be due to the low coordinate nature of the nitrogen centre. The Al−N unit is highly polar, and capable of the activation of relatively inert chemical bonds, such as those found in dihydrogen and carbon monoxide. In the case of CO, uptake of two molecules of the substrate leads to C−C coupling and C≡O bond cleavage. Thermodynamically, this is driven, at least in part, by Al−O bond formation. Mechanistically, a combination of quantum chemical and experimental observations suggests that the reaction proceeds via exchange of the NR and O substituents through intermediates featuring an aluminium‐bound isocyanate fragment. [ABSTRACT FROM AUTHOR]

A continuous, scalable, and solvent‐free method for the synthesis of various naphthalic imides and perylene diimides (PDIs) using twin‐screw extrusion (TSE) is reported. Using TSE, naphthalic imides were obtained quantitatively without the need for excess amine reactant or product purification. With good functional‐group tolerance, alkyl and benzyl amine derived PDIs (incl. commercial dyes) were obtained in 50–99 % yield. Use of K2CO3, enabled synthesis of more difficult aniline‐derived PDIs. Furthermore, an automated continuous TSE process for Pigments Black 31 and 32 is demonstrated, with a throughput rate of about 1500 g day−1, corresponding to a space time yield of about 30×103 kg m−3 day−1, which is 1–2 orders of magnitude greater than for solvent‐based batch methods. These methods provide substantial waste reductions and improved efficiency compared to conventional solvent‐based methods. [ABSTRACT FROM AUTHOR]

An electrochemical four‐component reaction cascade Mumm rearrangement was developed. It is a rare example of in situ generation of O‐acyl isoamides for 1,3‐(O→N) acyl transfer. Inexpensive, commercially available arylethylenes, aryl or heterocyclic acids, acetonitrile, and alcohols were used as substrates. A wide range of aryl acids and alcohols were tolerated and provided imides in satisfactory yields. Subsequent hydrolysis of imides could be utilized to synthesize valuable amides and β‐amino alcohol derivatives. [ABSTRACT FROM AUTHOR]

Benzocyclobutene (BCB) resins have aroused much interest because of their excellent physical and chemical properties. Unfortunately the temperature required to induce cross-linking in typical BCBs is higher than 250°C, which restricts their applications. In this study, a novel cyano-containing BCB-terminated imide monomer was synthesized through the reaction of 1-cyano-5-amino-benzocyclobutene with 4,4′-oxydiphthalic anhydride. This monomer allows a 50–100°C lower curing temperature in comparison with typical BCBs, and it is highly soluble in various solvents and can easily convert to cured film at 150–200°C. Because of the presence of rigid imide group and strong polar cyano group, the cured film exhibits excellent mechanical strength with tensile strength up to 87.8 MPa, high glass transition temperature up to 350°C, low coefficient of thermal expansion (36.9 ppm K−1), and outstanding planarity with the average surface roughness as low as 0.26 nm. [ABSTRACT FROM AUTHOR]

The reactivity of the yttrium trichloride complex [Cl 3 Y{(μ 3 -NH) 3 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)}] (2) with a variety of main-group metal cyclopentadienyl reagents [M(C 5 H 3 R1R2)] (M = Li, Na, K, Tl) or [Mg(C 5 H 5) 2 ] has been investigated. Treatment of 2 with one equivalent of [Na(C 5 H 5)] or [K(C 5 H 4 SiMe 3)] gives the monocyclopentadienyl derivatives [(η5-C 5 H 4 R)Cl 2 Y{(μ 3 -NH) 3 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)}] (R = H (3), SiMe 3 (4)). Analogous reaction of 2 with lithium [Li(C 5 H 3 R1R2)] or thallium [Tl(C 5 H 5)] reagents (1 or 2 equivalents) leads to complexes [(η5-C 5 H 3 R1R2) 2 Y(μ-Cl) 2 M{(μ 3 -NH) 3 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)}] (M = Li, R1 = R2 = H (5), R1 = H, R2 = SiMe 3 (6), R1 = R2 = SiMe 3 (7); M = Tl, R1 = R2 = H (8)). Complex 2 reacts with [Mg(C 5 H 5) 2 ] to yield the ionic compound [(μ-Cl) 3 Mg 2 {(μ 3 -NH) 3 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)} 2 ][{Y(η5-C 5 H 5) 2 Cl} 2 (μ-Cl)] (9). In contrast to the metathesis of chloride ligands, the reaction of 2 with the lithium indenyl derivative [Li(C 9 H 7)] at room temperature produces C 9 H 8 and the precipitation of [Li(μ-Cl) 3 Y{(μ 3 -N)(μ 3 -NH) 2 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)}] (10). Crystallization of 10 in pyridine affords the lithium-free [Cl 2 (py) 2 Y{(μ 3 -N)(μ 3 -NH) 2 Ti 3 (η5-C 5 Me 5) 3 (μ 3 -N)}] (11) complex. The X-ray crystal structures of 6 and 11 have been determined. Image 1 • Yttrium complexes with a tridentate imido-nitrido titanium metalloligand were synthesized. • Cyclopentadienyl derivatives were prepared by salt metathesis of chloride ligands bonded to yttrium. • Bis(cyclopentadienyl)magnesium gave a compound with a double-cube titanium-magnesium cation. • Indenyllithium led to deprotonation of a NH imido group and formation of a bridging nitrido ligand. [ABSTRACT FROM AUTHOR]

• One-pot synthesis of castor and tung oil-based polyurethane-imides was developed. • The introduction of Diels-Alder adducts notably increases the mechanical properties. • The thermal stability improves with the incorporation of imide groups. • The resulting polymers have high bio-renewable content. Herein, castor and tung oil-based polyurethane-imides with tailored thermal and mechanical performance were developed by a one-pot method. First, tung oil (TO) was transformed into eleostearic acid diethanol amide (EADEA) by methyl-esterification and amidation. The resulting EADEA was then mixed with castor oil (CO), N -(2-hydroxyethyl)-maleimide (HEMI) and isophorone diisocyanate to prepare biobased polyurethane-imides. The formation of Diels-Alder (DA) adducts from EADEA and HEMI during the curing process was determined by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The effect of DA adducts contents on the thermal and mechanical properties of corresponding polymers was investigated. The results show that the introduction of TO-maleimide DA adducts significantly increases the glass transition temperature, tensile strength, Young's modulus and gel content of the resulting polyurethanes. The highest tensile strength of the resulting polymers can reach 48.2 MPa. Besides, the thermal stability was also improved with the incorporation of imide groups. This technique reported here demonstrates several advantages, such as one-pot synthesis, high bio-renewable content, low cost and tunable performance, and it is promising to find application in coatings, adhesives and so on. [ABSTRACT FROM AUTHOR]

Formally dianionic ligands such as alkylidenes or organoimidos play a major role in the organometallic chemistry of transition metals and are an emerging topical area of f‐element chemistry. The pursuit and development of main‐group‐metal congeners has been tackled sporadically but is clearly lacking behind. The pronounced ionic bonding in particular, prevailing in alkali and alkaline‐earth (Ae) metal derivatives, proved cumbersome. Recent substantial progress in the respective field of divalent Ae chemistry has been triggered by the implementation of new synthesis strategies involving new AeII precursors and tailor‐made ligands. The main emphasis of this Minireview will be on the synthesis and reactivity of well‐defined Group 2 alkylidenes, organoimides, silylenes, and phosphandiides. [ABSTRACT FROM AUTHOR]

Three five‐coordinate iron(IV) imide complexes have been synthesized and characterized. These novel structures have disparate spin states on the iron as a function of the R‐group attached to the imide, with alkyl groups leading to low‐spin diamagnetic (S=0) complexes and an aryl group leading to an intermediate‐spin (S=1) complex. The different spin states lead to significant differences in the bonding about the iron center as well as the spectroscopic properties of these complexes. Mössbauer spectroscopy confirmed that all three imide complexes are in the iron(IV) oxidation state. The combination of diamagnetism and 15N labeling allowed for the first 15N NMR resonance recorded on an iron imide. Multi‐reference calculations corroborate the experimental structural findings and suggest how the bonding is distinctly different on the imide ligand between the two spin states. [ABSTRACT FROM AUTHOR]

Ammonia is feeding nearly half the world population and also holds the promise as a carbon‐free energy carrier. The development of ammonia synthesis and decomposition processes under milder conditions is a grand challenge for more than a century. Increasing effort is devoted to this area in recent years and encouraging progress has been achieved. In this paper, we summarize our recent research using alkali or alkaline earth metal amides, imides and hydrides for ammonia synthesis and decomposition. These materials could serve as either indispensible component of active center in thermal catalytic process or nitrogen carrier for chemical looping ammonia synthesis. The synergy of amide, imide, or hydride with transition metals enables ammonia synthesis or decomposition with unprecedented high efficiency under milder reaction conditions, and thus opens an avenue to advance the chemistry or catalysis of N2 fixation reaction. The compositional and structural diversity of the amide, imide and hydride materials provides plenty of opportunity and potential for further exploration and optimization. [ABSTRACT FROM AUTHOR]

A novel variety of cycloaliphatic epoxy resins containing imide and diphenyl sulfone (named as 4,4′-bis[4-(4,5-epoxy-1,2,3,6-tetrahydro-phthalimido) phenoxy] diphenyl sulfone, BIES) is designed and synthesized through the three-step procedure. The mixtures of BIES and diglycidyl 4,5-epoxycyclohexane-1,2-dicarboxylate (TDE-85) are cured with methyl tetrahydrophthalic anhydride. Fourier transform infrared spectrum and proton nuclear magnetic resonance spectrum confirm that the BIES contains the chemical structure of imide and diphenyl sulfone. The measurements of glass transition temperature (Tg), heat distortion temperature (HDT), and the 5% weight loss temperature (T5%) show that the co-cured BIES/TDE-85 exhibits excellent heat resistance. For the BIES/TDE-85 with mass ratio of 0.2, Tg, HDT, and T5% of the co-cured epoxy are 175°C, 162°C, and 290°C, respectively. The impact strength increases from 117 J m−1 to 139 J m−1 with the increasing of the mass ratios of the BIES/TDE-85 from 0 to 0.2. [ABSTRACT FROM AUTHOR]

Graphical abstract Highlights • The synthesis of a series of cyclic imides of hydrazide benzenesulfonamides was reported. • The effect of an amide linker between the cyclic imide and the inhibitory scaffold was studied. • The derivatives were investigated as hCA I, II, IV and IX inhibitors. • The derivatives exhibited the best inhibitory activity against hCA II and hCA IX. • Of note, two interesting CA IV selected derivatives were found. Abstract The synthesis, characterization and biological evaluation of series of cyclic imides incorporating the 4-sulfamoylbenzamide scaffold (16 – 29) is disclosed. The compounds were designed by application of the "tail approach" to the aromatic sulfonamide scaffold and prepared by reacting the proper acid anhydride with 4-(hydrazinecarbonyl)benzenesulfonamide (15). Phtalimides and cyclic imides are biologically privileged scaffolds, endowed with versatile biological activity, such as an anti-proliferative action. The compounds were investigated for the inhibition of four human (h) isoforms of zinc enzyme carbonic anhydrase (CA, EC 4.2.1.1), and more specifically against the cytosolic hCA I and II and the transmembrane hCA IV and IX. Most screened sulfonamides exhibited great potency in inhibiting CA isoforms II, widely involved in glaucoma and other pathologies (K I s in the range of 0.7–62.3 nM), and IX, that is a validated anti-tumor target (K I s in the range of 3.0–50.9 nM), whereas interesting hydrophilicity-dependent inhibitory profiles were measured against isoform CA IV (K I s in the range of 3.9–428.6 nM). In silico studies were carried out to assess the binding mode of selected derivatives to hCA II, IV and IX. [ABSTRACT FROM AUTHOR]

Protonolysis of lanthanide tris(tetramethylaluminate)s with two equivalents of 2,6‐diisopropylaniline affords LaIII and CeIII diimide compounds Ln[(μ‐NC6H3iPr2‐2,6)2AlMe2](thf)4 featuring a bidentate AlMe2‐linked diimido ligand. As revealed for the corresponding Ce(GaMe4)3‐reaction, formation of the diimide complexes proceeds via tetrametallic complexes of the type [Ce{(μ‐NC6H3iPr2‐2,6)(HNC6H3iPr2‐2,6)(MMe3)}]2 (Me=Al, Ga). Oxidation of the cerium(III) complex with hexachloroethane leads to a neutral CeIV diimide species. Partial protonolysis with phenylacetylene and hydrogenolysis via H3SiPh give conclusive insights into the reactive coordination sites of such diimide complexes. The [(NAr)2AlMe2] diimido scaffold not only provides a suitable platform for performing CeIII/CeIV redox chemistry in a metal alkyl environment but also engages in inherent LnIII imide reactivity. [ABSTRACT FROM AUTHOR]

Crystal structures of 4-chloro-N-(4-chlorobenzoyl)-N-(2-pyridyl)benzamide (I) Clpod, 3-chloro-N-(3-chlorobenzoyl)-N-(2-pyridyl)benzamide (II) Clmod and 2-chloro-N-(2-chlorobenzoyl)-N-(2-pyridyl)benzamide (III) Clood together with three methylated analogues, Mpod, Mmod and Mood, are presented herein. The Clxod acyclic imides are produced from reacting the 4-/3-/2-chlorobenzoyl chlorides (Clx) with 2-aminopyridine (o), respectively, together with their benzamide analogues Clxo; the Mxod/Mxo triad are produced similarly and in good yield. The five Clxod, Mpod and Mmod structures adopt the open transoid conformations as expected, but Mood crystallises with cisoid oriented benzoyl groups, and this conformation was unexpected, though not unknown. Halogen bonding contacts and weak hydrogen bonding C-H···N/O/π contacts are noted in the structures lacking strong hydrogen bonding donor atoms/groups but possessing a variety of strong and weaker acceptor atoms/groups. For Clxod, contact studies show that both hydrogen and carbon account for a high percentage of elements (70-75%) on the molecular surface and being the most abundant have C···H forming 26-30% of the contacts. Contact enrichment ratios are an indicator of the likelihood of chemical species to form intermolecular interactions with themselves and other species. The C-H···N and C-H···O are the most enriched (with EHN > 2.15), indicating that these weak hydrogen bonds are the driving force in the Clxod crystal packing formation. For Mxod, the C···H contact type at 40-52% is the most abundant contact type and C-H···O and C-H···N weak hydrogen bonds dominate with enrichment values in the 1.48-1.78 range. In Mxod, N/O···N/O contacts are effectively absent, except for Mpod (0.2%, N···N contacts) and both H···H and C···C non-polar contacts are moderately impoverished while the C···H interactions are slightly enriched (E = 1.1-1.21). [ABSTRACT FROM AUTHOR]

Benzocyclobutene resins play an important role in microelectronic industry owing to their excellent physical and chemical properties. In our work, three novel benzocyclobutene-terminated imide monomers were synthesized via the reaction of 1-aminomethyl benzocyclobutene with various aromatic dianhydrides. The monomers exhibited good processability with superior solubility and low melting points (<163.5 °C), and they showed similar curing behaviors under N 2 with an exothermic peak in differential scanning calorimetry (DSC) curves ranging from 217.3 °C to 287.7 °C. Highly crosslinked resins obtained at 150–300 °C exhibited superior tensile strength (>74.3 MPa), outstanding thermal stability (T d  > 466 °C in N 2 ), high glass transition temperature (>278 °C), high storage modulus (>3.25 GPa at 30 °C), low dielectric constant (<3.07 at 1 MHz) and good water resistance (the water absorption was below 0.81% after immersed in water for 24 h and the water contact angle was higher than 86.6°). Atomic force microscopy demonstrated the perfect uniformity and planarity of the cured films. [ABSTRACT FROM AUTHOR]

Abstract: The zirconium methylidene (PNP)Zr=CH2(OAr) (1) reacts with N3Ad to give two products (PNP)Zr=NAd(OAr) (2) and (PNP)Zr(η2‐N=NAd)(N=CH2)(OAr) (3), both resulting from a common cycloaddition intermediate (PNP)Zr(CH2N3Ad)(OAr) (A). Using a series of control experiments in combination with DFT calculations, it was found that 2 results from a nitrene by a carbene metathesis reaction in which N2 acts as a delivery vehicle and forms N2CH2 as a side product. In the case of 3, N−N bond splitting of the azide at the α‐position allowed the isolation of a rare example of a parent ketimide complex of zirconium. Isotopic labeling studies and solid‐state X‐ray analysis are presented for 2 and 3, in addition to an independent synthesis for the former. [ABSTRACT FROM AUTHOR]

Molecules of the title compound, C24H8F4N2O8, have Ci point-group symmetry in the crystal, as they lie on crystallographic inversion centres (Z0 = 1/2). The difluorophenyl ring is disordered over two orientations; the final refined occupancy factors of the two components of disorder are 0.947 (4) and 0.053 (4). In the crystal, some Car--H. . .F interactions are present, which involve the most acidic H atom of the molecule. [ABSTRACT FROM AUTHOR]

Treatment of (tBu3SiNH)(tBu3SiN=)2WH ( 1-H) with small alkyl anions (RM) afforded tungsten alkyl hydride anions [(tBu3SiNH)(tBu3SiN=)2HWR)]M ( 3-(R)M: R=CH3, M=Li; R=nBu, M=Li; R=neoPe, M=Li; R=CH2Ph (Bn), M=K (two isomers); R=CCH, M=Na; R=CH=CH2 (Vy), M=Li). The saturated alkyl anions 3-(R)M ( 3-(R)M: R=CH3, M=Li; R=nBu, M=Li; R=neoPe, M=Li; R=CH2Ph (Bn), M=K) degraded via apparent 1,2-RH-elimination to produce the known [(tBu3SiN=)3WH]M ( 2-HM), but the acetylide ( 3-(C2H)Na) and vinyl ( 3-(Vy)Li) anions converted to their hydrogenated isomers, [(tBu3SiN=)3WVy]Na ( 2-VyNa) and [(tBu3SiN=)3WEt]Li ( 2-EtLi), respectively. The structure of 3-(nBu)Li is reported, and a discussion of tungsten-hydride coupling constants in tBu3SiX-ligated (X=O, NH, N) systems is given. [ABSTRACT FROM AUTHOR]

In this study, the morphology, optical transparency, thermal properties and contact angle of solvent based polyamide − imide (SBP)/clay nanocomposites coatings were investigated. For this work, the nanocomposites (NC)s of SBP and different amounts of organoclay (Cloisite 20A) were prepared by solution intercalation technique. Finally, SBP/C20A NCs containing 1, 3 and 5 wt% of C20A were mixed via mechanical agitation and ultrasonic homogenizer and applied on cold-rolled steel (CRS) and glass substrates. The structures of exfoliation, intercalation, and aggregation feature were confirmed by wide-angle X-ray diffraction (WAXD), field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray map (EDS-mapping) analysis. The formation of SBP and NC was confirmed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. The hydrophobicity, thermal stability and optical transparency of the coatings were also investigated using contact angle (CA) measurement with distilled water, thermogravimetric analysis (TGA) and UV–vis spectroscopy, respectively. Thermogravimetric analysis and hydrophobicity results showed that the addition of 1 and 3 wt% C20A into the SBP matrix increased the thermal decomposition temperatures and the CA of as-obtained nanocomposites compared to the pure SBP and NC5%. Furthermore, UV–vis spectroscopy and photograph results confirmed that the optical transparency of the NCs was reduced. [ABSTRACT FROM AUTHOR]

A novel small-sized discotic core was constructed by fusing an imide unit with well-known triphenylene core. All target compounds 6a-k self assemble into a liquid crystalline phases having high clearing temperatures and broad phase ranges over 200 °C, and exhibit green luminescence both in solution and solid states. On cooling from the isotropic phase, compounds 6d-e and 6i-j containing the branched N-alkyl chain show only one peak for the isotropic to mesophase transition which is stable down to −50 °C. Comparison of 6a's mesomorphic behaviors and photophysical properties to a known hexahexyloxytriphenylene (1a) and the parent compound (4a) demonstrates the importance of peripherally attached functional groups in stabilizing columnar mesophases and inducing long-wavelength emission. Both the experimental results and computational calculations show that suitable peripheral functionalization of the discotic liquid crystal molecules not only results in significant differences in mesogenic behavior of the molecules, but also renders the molecules with the interesting optoelectronic properties, including large Stokes shifts and low-lying LUMO energy levels. [ABSTRACT FROM AUTHOR]

Providing high energy density and theoretical capacity, lithium-sulfur (Li–S) battery technologies emerged as a suitable alternative to the existing lithium-ion batteries (LIBs) at low cost. However, insulating nature of sulfur, dissolution of polysulfides into the aprotic electrolyte solvent as well as volume changes upon cycling cause rapid capacity decay. One of the effective strategies is the usage of redox active functional organic materials to trap polysulfides or utilization of conductive carbon materials to overcome lower electronic conductivity of the sulfur active material. In this work, N –N′-diphenyl-1,4,5,8-naphtalene-tetra-carboxylic-diimide (DP-NTCDI) is efficiently synthesized and mixed with single-walled carbon nanotube (SWCNT) to both serve as polysulfide adsorbent and conductive agent role. After the detailed structural characterization, density functional theory (DFT) analysis as well as adsorption tests, the electrochemical performances of the Li–S cell performances are evaluated in which the discharge value over 330 mAh/g at C/5 after 150 cycle is achieved with 85 wt% sulfur containing electrode. [Display omitted] • Redox-active imide and carbon nanotube (SWCNT) composite was synthesized. • The composite mixed with high sulfur, 85 wt%, and tested as Li–S battery cathode. • Imide group mitigated the dissolution of polysulfides, SWCNT provided conductivity. • Interaction between imide carbonyl groups and SWCNT was investigated by DFT. • High sulfur loaded, 85 wt%, cathode delivered 330 mAh/g capacity after 150 cycles. [ABSTRACT FROM AUTHOR]

• The pNTCDA-TPAT polymer exhibits a highest specific capacity of 217.4 f g−1 at 0.5 a g−1 among the three polymers. • The pNTCDA-TAPB@20%CNT composite exhibits a unique core-shell structure. • The degrees of specific capacitance improvement for the pNTCDA-TAPB polymer after composition is significantly higher than that for other polymers. Conjugated microporous polymers (CMPs) have attracted more and more attention owing to inherent pore and high specific area. However, the low conductivity for CMPs limits its application in energy storage. Herein, three kinds of imide conjugated microporous polymers (pNTCDA-TAPB, pNTCDA-TAPM and pNTCDA-TPAT) with different cores were achieved via the condensation reaction. Also, the corresponding composites (pNTCDA-TAPB@CNT, pNTCDA-TAPM@CNT and pNTCDA-TPAT@CNT) were prepared by the in-situ composition with CNT. Among the three polymers, pNTCDA-TPAT exhibits the highest specific capacity of 217.4 F g−1 at 0.5 A g−1 in the neutral electrolyte than that of others, which is a high value among the reported CMPs-based energy storage materials. FT-IR spectra at the applied voltages proved that the excellent energy storage capacity for pNTCDA-TPAT could be attributed to the involvement of the triazine central core except of imide units participating in the reduction of energy storage. However, the energy storage capacity of pNTCDA-TAPB after compositing with CNT has been greatly improved compared with the pure polymer while the energy storage capacity improvement for others two polymers with CNT (pNTCDA-TAPM@CNT and pNTCDA-TPAT@CNT) is not significant. SEM and HR-TEM results indicate that the distinct difference for the three polymers after composition with CNT could be attributed to the formation of unique core-shell structure for pNTCDA-TAPB@CNT system, which may be beneficial to the ion migration and electron transport. Among the three CMPs polymers, pNTCDA-TAPT polymer exhibits a highest specific capacitance of 217.4 F g−1 at 0.5 A g−1, which may be attributed to the reduction energy storage of the triazine central core except of imide units. However, the energy storage capacity of pNTCDA-TAPB after compositing with CNT has been greatly improved compared with the pure polymer and other polymers, which may be attributed to the formation of unique core-shell structure after composition with CNT. [Display omitted] [ABSTRACT FROM AUTHOR]

Directed lithiation of pyrene-1-carboxamides, followed by reaction with DMF, afforded 7-hydroxy-8,9-dihydro-7 H -phenaleno-[1,9- ef ]isoindoles, which were oxidized with Jones reagent to the corresponding pyrene-1,2-dicarboximides. Similarly, the reaction of lithiated N - tert -butylpyrene-1-carboxamide with tert -butyl isocyanate afforded N,N’ -di- tert -butylpyrene-1,2-dicarboxamide. The electronic structure and photophysical properties of these compounds were studied by means of theoretical (TD DFT) calculations and experimental (steady-state and time-resolved fluorescence) methods and were compared with those of their pyrene-1- monocarbonyl counterparts. The obtained results reveal the considerable influence of the carbonyl group at the 2-position on the structure and luminescent properties of this class of pyrenyl fluorophores. [ABSTRACT FROM AUTHOR]

Die Protonolysereaktion von Dibenzylcalcium mit Triphenylsilylamin liefert ein THF ‐ stabilisiertes, tetrameres Calciumimid. Der Einsatz von Calcium ‐ bis(tetramethylaluminat) in einer Salzmetathese ‐ Protonolyse ‐ Reaktionsfolge mit den Alkalimetallamiden von 2,6 ‐ Diisopropylamin und Triphenylsilylamin ermöglicht den Zugang zu monomeren, Lewis ‐ Säure ‐ stabilisierten Calciumimiden des Typs [(THF)4Ca(μ2 ‐ NR)(μ2 ‐ Me)AlMe2]. Während die Reaktion von [(THF)4Ca(μ2 ‐ NSiPh3)(μ2 ‐ Me)AlMe2] mit Phenylsilan unter Addition der H ‐ Si ‐ Bindung an die Ca ‐ N ‐ Imidbindung zur Bildung eines homoleptischen Calciumamidoaluminats und putativem CaH2 führt, entsteht bei der Reaktion mit Phenylacetylen unter Protonierung einer AlMe ‐ Einheit der dimere Komplex [(THF)Ca{NSiPh3}{AlMe2(CCPh)}]2. Salzmetathese ‐ Protonolyse ‐ Reaktionsfolgen unter Einsatz von [Ca(AlMe4)2]n und [K{NH(SiPh3)}] machen Lewis ‐ Säure(AlMe3) ‐ stabilisierte Calciumimide zugänglich, deren Ca=NR ‐ Mehrfachbindungscharakter durch Si ‐ H ‐ Addition nachweisbar ist (siehe Schema). [ABSTRACT FROM AUTHOR]

The decarbonylative coupling of phthalimides with diorganozinc reagents to form o -substituted benzamides has been previously demonstrated as a viable process, but only with stoichiometric nickel(0). Investigations into a number of reaction variables, including solvent, ligand, and substrate substitution, have yielded multiple sets of conditions capable of achieving up to 10 catalyst turnovers, most successfully with the use of electron withdrawing nitrogen substituents on the phthalimide. In addition, these investigations have provided insight into the intermediates within the catalytic cycle and have revealed new approaches to the development of a general catalytic methodology. [ABSTRACT FROM AUTHOR]

Carbonylation reactions are a most powerful method for the synthesis of carbonyl-containing compounds. However, most known carbonylation procedures still require noble-metal catalysts and the use of activated compounds and good nucleophiles as substrates. Herein, we developed a copper-catalyzed carbonylative transformation of cycloalkanes and amides. Imides were prepared in good yields by carbonylation of a C(sp3)−H bond of the cycloalkane with the amides acting as weak nucleophiles. Notably, this is the first report of copper-catalyzed carbonylative C−H activation. [ABSTRACT FROM AUTHOR]

Hybrid hyper-cross-linked membranes based on inorganic polyhedral oligomeric silsesquioxanes (POSS) covalently bonded with organic imides have been shown to maintain remarkable molecular sieving abilities and gas separation performances up to 300 °C. These films are obtained through the interfacial polycondensation of POSS with a dianhydride, leading to a polyPOSS-(amic acid) network, which is then converted to a polyPOSS-imide network by thermal imidization. Using the pyromellitic (PMDA) dianhydride as a test case, the underlying molecular structures have been generated by molecular dynamics (MD) simulations and specific algorithms which closely mimicked the mixing, polycondensation and imidization steps of the experimental scheme. This allowed realistic models of the final cross-linked imide networks to be compared with their un-cross-linked monomer mixtures and their intermediate amic-acid precursors. Both the formation of the network and the subsequent imidization decreased the density as the systems became sterically more constrained. The volume shrinkage during imidization was less than expected considering the amount of water removal. This led to a larger void space and an improved gas solubility for the polyPOSS-imide films. Although the networks were constructed with the experimentally-found average of four linked arms per POSS, the distribution of the number of links per POSS were quite wide with a range from zero to the maximum possible of eight links per POSS. There was also considerable heterogeneity in the POSS⋯imide⋯POSS angles, which was related to the flexible aliphatic linker between the organic and inorganic moieties. Thermomechanical analyses confirmed that these cross-linked materials were well-suited for high-temperature applications. When subjected to uniaxial tension, they strain hardened at large deformations and their elastic moduli remained solid-like at high temperatures. [ABSTRACT FROM AUTHOR]

An efficient method for the preparation of N -formyl imide via amidine using propylphosphonic anhydride (T3P®) has been described. Using this method many aryl, hetero aryl, alkyl as well as amino acid imides were synthesized in high yields. [ABSTRACT FROM AUTHOR]

Carbonylation reactions allow the efficient synthesis of all kinds of carbonyl-containing compounds. Here, we report a straightforward synthesis of various imides from olefins and CO for the first time. The established hydroamidocarbonylation reaction affords imides in good yields (up to 90 %) and with good regioselectivity (up to 99:1) when applying different alkenes and amides. The synthetic potential of the method is highlighted by the synthesis of Aniracetam by intramolecular hydroamidocarbonylation. [ABSTRACT FROM AUTHOR]

ABSTRACT A novel imide modified vinyl-containing fluorosilicone resin (MP-VFS) was firstly prepared from maleopimaric acid (MPA), and characterized by 1H NMR and 13C NMR. Containing MPA based imide heterocycle (MPABI), MP-VFS was further used as a novel cross-linker to prepare MPA modified fluorosilicone rubber (MP-FSR). Morphology, mechanical and oil-resistance properties, thermal properties, and low temperature resistance of MP-FSR had been studied. Microphase separation was observed in MP-FSR. Although the tensile strength of fluorosilicone rubber was not significantly enhanced, the tearing strength, breaking elongation, rebound resilience and hardness were effectively improved. When the MP-VFS content was 2.0 wt %, the tearing strength of MP-FSR was increased by 23.5%, breaking elongation by 18.6% and rebound resilience by 9.7%. The thermal stability was enhanced due to the incorporation of MPABI. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1769-1776 [ABSTRACT FROM AUTHOR]