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Porous Mn-doped α-Fe2O3 nanostructures are prepared by calcination (500 °C, 3 h) of carbon spheres containing FeII and MnII ions which are obtained by hydrothermal treatment of FeSO4 and MnSO4 (4:1) and glucose (H2O, autoclave, 160 °C, 4 h). [ABSTRACT FROM AUTHOR]

An abstract of the article "An Efficient Approach Toward Formation of Polycyclic Coumarin Derivatives via Carbocation-Initiated 4 + 2 Cycloaddition and Atom-Economical Photo-Irradiated Cyclization" by J. Cao, Zhan-Jiang Zheng, and Li-Wen Xu is presented.

An abstract of the article "Importance of a Fluorine Substituent for the Preparation of meta- and para-Pentafluoro-λ6-sulfanyl-Substituted Pyridines" by M. Kosobokov, B. Cui, and A. Balia is presented.

An abstract of the article "Importance of a Fluorine Substituent for the Preparation of meta-and para-Pentafluoro-sulfanyl-Substitured Pyridines" by M. Kosobokov and colleagues is presented.

Using a series of chiral bifunctional hydrogen-bonding organocatalysts, the asymmetric cascade Michael/cyclization reaction between 2-substituted thiazolones and 2-(2-oxoindolin-3-ylidene)malononitriles gives novel, potentially bioactive thiazole-fused spirooxindoles with good product yields and excellent enantioselectivities. [ABSTRACT FROM AUTHOR]

An abstract of the study "Organocatalytic Asymmetric Mannich Reaction of 3-Hydroxyoxindoles/3-Aminooxindoles With in situ Generated N-Boc-Protected Aldimines for the Synthesis of Vicinal Oxindole-Diamines/Amino Alcohols" by J. Shan and colleagues is presented.

Whereas the title reaction between N-tosyl homoallylamine with aryl or alkyl aldehydes and trimethylsilyl bromide, chloride or iodide delivers the corresponding 2-substituted 4-halopiperidines with high trans selectivity, application of trimethylsilyl fluoride provides mixtures of cis and trans isomers. [ABSTRACT FROM AUTHOR]

An abstract of the article "Aerobic α-Hydroxylation of β-Keto Esters and Amides by Co-Catalysis of SmI

The coupling between 1-(naphthalen-1-yl)benzo[h]isoquinoline and various styrene derivatives as well as unsaturated esters, amides and phosphonates proceeds under mild conditions and delivers the products in high yields and with often very high enantiomeric excesses. [ABSTRACT FROM AUTHOR]

A graphical abstract of the article "Metal-Free Direct Construction of Sulfenylated Pyrazoles via the NaOH Promoted Sulfenylation of Pyrazolones with Aryl Thiols" is presented.

An enantioselective formal [3 + 3] annulation of pyrazolinones (I) and Morita-Baylis-Hillman type nitroolefins (II) is developed using a bifunctional squaramide as catalyst. [ABSTRACT FROM AUTHOR]

An abstract of the article "One-Pot Approach to 8-Acylated 2-Quinolinones via Palladium-Catalyzed Regioselective Acylation of Quinoline N-Oxides" by Xiaopei Chen and colleagues is presented.

During the condensation of anthranilamides with aldehydes (especially aliphatic aldehydes), an excess of the aldehydes promotes the oxidation of an aminal intermediate to the target quinazolinones. [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to the article "Rh(III)-Catalyzed Aromatic C-H Bond Carbenoid Functionalization of Triazenes by α-Diazomalonate" by Dahai Wang and others, published in the journal "Tetrahedron" in 2016.

[(NH4)2Mo4O13]n is hydrothermally synthesized from a mixture of (NH4)2MoO4, nicotinic acid, 4,4′-bipyridine, and H2O in the molar ratio of 2:1:2:333 (autoclave, 190 °C, 3.5 d). [ABSTRACT FROM AUTHOR]

A facile protocol is developed for the decarboxylative radical allylation of a wide range of carboxylic acids with allyl sulfones. [ABSTRACT FROM AUTHOR]

This novel catalyst-free method uses water as solvent and promoter, proceeds under mild conditions, and gives good yields. [ABSTRACT FROM AUTHOR]

A regioselective Rh(III)-catalyzed C-H arylation of arenes with arylboronic acid pinacol esters is developed using N-pentafluorophenylbenzamide as directing group. [ABSTRACT FROM AUTHOR]

The simple protocol allows the direct amination of acetophenone and benzophenone bearing a p-chloro substituent with cyclic secondary amines. [ABSTRACT FROM AUTHOR]

Bi4O5Br2 (I) is prepared by a one-step hydrolysis route employing a 1:1 molar solution of Bi(NO3)3 and KBr in ethylene glycol to which aqueous NH3 is given (25 °C, 1 h). [ABSTRACT FROM AUTHOR]

A three-component reaction of olefins, thiols, and aliphatic nitriles with molecular iodine as catalyst is presented to give β-acylamidosulfides. [ABSTRACT FROM AUTHOR]

Review: 156 refs [ABSTRACT FROM AUTHOR]

Review: [121 refs. [ABSTRACT FROM AUTHOR]

a graphical abstract for the study "Stereocontrolled Construction of 4,5-Dihydropyrrolo[1,2-a]quinoxaline Scaffolds via Chiral Phosphoramidate Catalyzed Pictet-Spengler-Type Reaction," is presented.

A series of spirooxindole tetrahydropyrans (III) and (VIII) is prepared by an organocatalytic asymmetric hetero-Diels-Alder reaction of isatins with enones. [ABSTRACT FROM AUTHOR]

Chemical equations is presented for the article "Iridium(III)-Catalyzed Direct C-H Sulfonamidation of 2-Aryl-1,2,3-triazole N-Oxides with Sulfonyl Azides" by B. Zhu and others, published in the journal "Advanced Synthesis & Catalysis" in 2016.

Review: [106 refs. [ABSTRACT FROM AUTHOR]

The utility of this method is demonstrated in the demethylation of gemfibrozil derivative (XII). [ABSTRACT FROM AUTHOR]

The title reaction affords tertiary allenyl (III) and homopropargyl alcohols (IV) in high selectivities from the same starting materials (I), simply by changing the reaction conditions. [ABSTRACT FROM AUTHOR]

Review: 50 refs. [ABSTRACT FROM AUTHOR]

Review: synthesis, structural features, stoichiometric reactivity, and catalytic activty; 61 refs. [ABSTRACT FROM AUTHOR]

An abstract of the article "Synthesis of Polysubstituted Thiophenes via Base-Induced [2 + 2 + 1] Cycloaddition Reaction of Alkynes and Elemental Sulfur" is presented.

Review: 41 refs. [ABSTRACT FROM AUTHOR]

Sodium hydrosulfite/tert-butyl hydroperoxide is used as new oxidation system for the oxidation of the title derivatives to the corresponding aromatized pyridine derivatives under green and mild reaction conditions. [ABSTRACT FROM AUTHOR]

The novel exocyclic enamides are efficiently obtained by reaction of various trifluoroatrolactamides with propargyl bromide. [ABSTRACT FROM AUTHOR]

The title compound is prepared by melting a mixture of (NH4)2BeF4 (purified by recrystallization to remove sulfate ions) and LiF according to a preset temperature program (graphite crucible, 650 °C, 3 h). [ABSTRACT FROM AUTHOR]

The article presents the methods for the synthesis of spiro compounds containing dihydrofuran and coumarin moieties from 3-bromo-4-hydroxycoumarins as cyclic α-halo compound based.

First-principles calculations (USPEX and CASTEP code) using plane-wave pseudopotentials under the generalized gradient approximation functional of Perdew-Burke-Ernzerhof are performed to investigate the structural, electronic, and elastic properties of N2O4 and N2O5. [ABSTRACT FROM AUTHOR]

Review: 124 refs. [ABSTRACT FROM AUTHOR]

The catalyst, which consists of iron oxides surrounded by nitrogen-doped-graphene shells immobilized on carbon, is obtained via pyrolysis of iron acetate and phenanthroline followed by a selective leaching process. [ABSTRACT FROM AUTHOR]

The title compounds are not obtained when the N-Me group is changed to N-H or N-Ph, which might be caused by electronic effects. [ABSTRACT FROM AUTHOR]

The reaction tolerates various functional groups. [ABSTRACT FROM AUTHOR]

Rhodium-diene complex RDPT is an efficient catalyst for the enantioselective 1,2-addition of heteroarylboronates (II) to aryl N-tosylimines (I) and aryl N-nosylimine (VII). [ABSTRACT FROM AUTHOR]

Aryl, benzyl, and alkylcarboxylic acids endowed with a range of functional groups as well as dicarboxylic acids are efficiently reduced to the corresponding alcohols. [ABSTRACT FROM AUTHOR]

The catalyst can be recycled and reused up to five times without significant loss of activity. [ABSTRACT FROM AUTHOR]

isolation, structure elucidation, and antiproliferative activities of two new triterpenoids along with eight known compounds [ABSTRACT FROM AUTHOR]

Benzo-fused 2,3-dihydrofurans are rapidly constructed from various β-dicarbonyl compounds and activated methylene compounds or electro-rich phenol nucleophiles. [ABSTRACT FROM AUTHOR]

A labdane-type diterpenoid, leojaponin D (I), and two ionone derivatives, leojaponones A and B [(II) and (III)], are isolated from the aerial parts of Leonurus japonicus. [ABSTRACT FROM AUTHOR]