Photogeneration of two reduction-active charge-separated states in a hybrid crystal of polyoxometalates and naphthalene diimides

Dalton Transactions, Год журнала: 2014, Номер 44(2), С. 484 - 487

Опубликована: Ноя. 19, 2014

Upon irradiation, two kinds of long-lived charge-separated states for the reduction reactions can be generated in a hybrid crystal composed two-dimensional naphthalene diimide coordination networks and polyoxometalates.

Язык: Английский

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Supported Metal Catalysts for the Synthesis of N-Heterocycles

Catalysts, Год журнала: 2022, Номер 12(1), С. 68 - 68

Опубликована: Янв. 9, 2022

Nitrogen-containing heterocycles are important scaffolds for a large number of compounds with biological, pharmaceutical, industrial and optoelectronic applications. A wide range different methodologies the preparation N-heterocycles based on metal-catalyzed cyclization suitable substrates. Due to growing interest in Green Chemistry criteria over past two decades, use supported metal catalysts has become central topic Organic Chemistry. Here we will give critical overview all solid applied synthesis N-heterocycles, following systematic approach as function type support: (i) inorganic matrices; (ii) organic (iii) hybrid inorganic-organic matrices. In particular, try emphasize effective heterogeneity recyclability described catalysts, specifying which studies were carried out order evaluate these aspects.

Язык: Английский

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A Catalyst‐ and Solvent‐ Free Synthesis of Tetra‐Substituted Pyrroles by Multicomponent Reaction

ChemistrySelect, Год журнала: 2023, Номер 8(1)

Опубликована: Янв. 2, 2023

Abstract A facile, catalyst‐ and solvent‐ free, three‐component reaction was developed for the synthesis of tetrasubstituted pyrroles at room temperature under white light. The proceeds via enamine formation between primary amines with 1,3‐dicarbonyl compounds followed by Michael addition β‐nitro styrene subsequent intramolecular cyclization aromatization to yield 1,2,3,4‐tetrasubstituted in good excellent yields. Further, present strategy is highly atom‐economical environmentally benign. preliminary vitro cytotoxic studies on a set were performed against Hepatocellular carcinoma cells (HepG2) one 4 ac showed significant activity an IC 50 value 17.82 μM.

Язык: Английский

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Novel CuFe₂O₄@SiO₂‐OP₂O₅H magnetic nanoparticles: Preparation, characterization and first catalytic application to the synthesis of 1,8‐dioxo‐octahydroxanthenes

Applied Organometallic Chemistry, Год журнала: 2017, Номер 32(1)

Опубликована: Июнь 29, 2017

New functionalized magnetic core–shell nanoparticles, CuFe 2 O 4 @SiO ‐OP 5 H, were prepared by grafting of phosphorus pentoxide on nanoparticles and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, energy‐dispersive X‐ray analysis, inductively coupled plasma optical emission spectrometry vibrating sample magnetometry. The catalytic activity H as a novel catalyst was evaluated in the synthesis 1,8‐dioxo‐octahydroxanthenes under solvent‐free conditions. results showed that has high desired products are obtained yields within short reaction times. is readily recovered decantation can be used at least four times without noticeable deterioration activity.

Язык: Английский

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Magnetic Silica-Supported Palladium Catalyst: Synthesis of Allyl Aryl Ethers in Water

Industrial & Engineering Chemistry Research, Год журнала: 2014, Номер 53(49), С. 18625 - 18629

Опубликована: Апрель 28, 2014

A simple and benign procedure for the synthesis of aryl allyl ethers has been developed using phenols, acetates, magnetically recyclable silica-supported palladium catalyst in water; performance reaction air easy separation an external magnet are sustainable attributes reaction.

Язык: Английский

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