Search

Fluorine atoms doping was reported in experiment to reduce the band gap, improve the oxidation potential of hole, and polarize the electron distribution of polymeric carbon nitride (PCN). However, the relationships between different types of F doping and the roles of F doping in electronic and optical properties remain elusive. In this work, we investigate several F doping types in PCN and analyze their different roles in electronic and optical properties with the first-principles calculations. The results show that two stable and cooperative F doping types are found, one is to form the C (sp

A four-stage oscillating feedback millireactor with splitters (S-OFM) was designed to improve the mixing performance based on chaotic advection. Three-dimensional CFD simulations were used to investigate its flow characteristics and mixing performance, and the generation mechanisms of secondary flows were examined. The results show that the mixing index (MI

Herein, we successfully synthesized C@MoSe2(1-x)S2x@MWCNT nanocomposite with heterojunctions as long-term stability anodes for sodium ion batteries (SIB). According to DFT calculations, the barrier of Na+ migration between MoSe2(1-x)S2x interlayers and that between GR@MoSe2(1-x)S2x@SWWCNT interlayers is 0.48 eV and 0.45 eV, respectively, significantly lower than that between MoSe2 interlayers (0.91 eV). Therefore, the introduction of S can enhance Na+ transport. The Se element can provide a larger interlayer spacing of MoSe2(1−x)S2x than MoS2, and MWCNT with high conductivity and thermal stability can be used as effective carriers for charge transfer. As an electrode material, PEG-200-2-C@MoSe2(1-x)S2x@MWCNT showed good performance for SIB: 300 mA h g-1 (500 cycles), 256 mA h g-1 (1000 cycles), 165 mA h g-1 (3000 cycles) and 126 mA h g-1 (6000 cycles) under the current density of 10 A g-1.

A simple, mild, green, and efficient method for the synthesis of 2-aminobenzamides is highly desirable. Herein, we report the development of an efficient, one-pot strategy starting from 2-aminobenzaldehydes and amines with acetic acid in ethyl acetate/acetone using irradiation with UV light for the synthesis of 2-aminobenzamides in high yields; 32 examples proceeded successfully by this photo-induced protocol in up to 92% yield. The reaction was also readily achieved on a gram scale. The utility of the 2-aminobenzamide building block in organic synthesis was shown by their use in the preparation of quinazolinone derivatives. The method was applied to amino acid derivatives as the amine component, which smoothly gave N-(2-aminobenzoyl)acetate derivatives at room temperature. Finally, a plausible mechanism is proposed.

The first trivalent and pentavalent tricarbabismatranes bearing the N(CH2C6H4−)3 ligand were synthesized.

We have developed a transition-metal free protocol for efficient cross-dehydrogenative coupling of 3-aryl benzofuran-2(3H)-ones and toluenes/phenols using DTBP as an oxidant.

Selective condensation/bicycloaromatization of two different arylalkynes is firstly developed under ligand-free copper(i)-catalysis, which allows the direct synthesis of C–N axial biaryl compounds in high yields with excellent selectivity and functional group tolerance. Due to the critical effects of Cu(i) catalyst and HFIP, many easily occurring undesired reactions are suppressed, and the coupled five–six aromatic rings are constructed via the selective formation of two C(sp2)–N(sp2) bonds and four C(sp2)–C(sp2) bonds. The achievement of moderate enantioselectivity verifies its potential for the simplest asymmetric synthesis of atropoisomeric biaryls. Western blotting demonstrated that the newly developed compounds are promising targets in biology and pharmaceuticals. This unique reaction can construct structurally diverse C–N axial biaryl compounds that have never been reported by other methods, and might be extended to various applications in materials, chemistry, biology, and pharmaceuticals., Selective condensation/bicycloaromatization of two different arylalkynes is firstly developed under ligand-free copper(i)-catalysis, which allows the direct synthesis of C–N axial biaryl compounds in high yields with excellent selectivity and functional group tolerance.

A novel and facile method for the Ag-catalyzed regioselective 1,6-hydroarylation of para-quinone methides (p-QMs) with anilines and phenols has been established, and a broad range of anilines (primary secondary, tertiary), phenols and p-QMs are well tolerated.

Phosphanylnaphtho[2,1-d]oxazoles, a P,N-chelating ligand, were synthesized through one-pot phosphonation/Cu-catalyzed oxidative condensation, followed by methylation and reduction.

Edge and bridge units embedded in carbon nitride frameworks have been well-designed via a facile polymerization method to boost exciton dissociation and charge separation.

The photocatalytic oxidation of toluene (TL) to benzaldehyde (BAD) has the advantages of mild reaction conditions, green chemistry, and high selectivity of the target products.

In this paper, a convenient synthesis of 2,5-diacylthiophenes and β-acyl allylic methylsulfones from aryl methyl ketones with dimethyl sulfoxide (DMSO) through Selectfluor-promoted cascade cyclization and cross-coupling reactions by simple solvent modification is described. This method enables the formation of new C-C and C-S bonds via the selection of different solvent ratios, in which DMSO molecules as synthons can be selectively introduced into methyl ketones. The features of this transformation include readily available starting materials, excellent chemoselectivity, and good functional group tolerance.

A novel method to synthesize N-aryl-1-amino indoles was established by the photoinduced N-N coupling reaction. This protocol is by treatment of o-nitrobenzyl alcohols and indolines in the presence of TEAI and acetic acid with a 24 W ultraviolet (UV) light-emitting diode (LED) (385-405 nm) irradiation. The products bearing an aldehyde group can be further transformed to fluorescent probes based on Rhodamine 6G derivative 11, which shows a high specificity and sensitivity for Fe3+.

Herein, we develop a mild method for N-acylation of primary and secondary amines with α-diketones induced by ultraviolet (UV) light. Forty-six examples with various functional groups are explored at room temperature with irradiation by three 26 W UV lamps (350-380 nm). The yield reaches 97%. The gram scale experiment product yield is 76%. Moreover, this system can be applied to the synthesis of several amino acid derivatives. Mechanistic studies show that benzoin is generated in situ from benzil under UV irradiation.

A simple and efficient methodology for the synthesis of large sterically hindered triarylamines in a single step was developed. A direct N,N-diarylation of 8-aminoquinoline with sterically hindered...