نتایج جستجو برای: heterogeneous catalytic

تعداد نتایج: 202404  

Journal: :Chemical communications 2014
Chen Chen Lingyu Kong Tanyu Cheng Ronghua Jin Guohua Liu

A facile method to construct chiral organoiridium-functionalized periodic mesoporous organosilica is developed. The heterogeneous catalyst displays excellent catalytic efficiency in the enantioselective reduction of α-cyanoacetophenones and α-nitroacetophenones in aqueous medium because of the hydrophobic nature and uniformly distributed active iridium species. The catalyst could be convenientl...

Journal: :Chemical communications 2015
M Filice O Romero J Gutiérrez-Fernández B de Las Rivas J A Hermoso J M Palomo

A solid-phase strategy using lipase as a biomolecular scaffold to produce a large amount of Cu(2+)-metalloenzyme is proposed here. The application of this protocol on different 3D cavities of the enzyme allows creating a heterogeneous artificial metallolipase showing chimeric catalytic activity. The artificial catalyst was assessed in Diels-Alder cycloaddition reactions and cascade reactions sh...

Journal: :Molecules 2016
Marco Araújo Iván Muñoz Capdevila Santiago Díaz-Oltra Beatriu Escuder

A heterogeneous supramolecular catalytic system for multicomponent aldol-'click' reactions is reported. The copper(I) metallohydrogel functionalized with a phenyltriazole fragment was able to catalyze the multicomponent reaction between phenylacetylene, p-nitrobenzaldehyde, and an azide containing a ketone moiety, obtaining the corresponding aldol products in good yields. A possible mechanistic...

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