H3+nPMo12-nVnO40-catalyzed selective oxidation of benzoins to benzils or aldehydes and esters by dioxygen

被引：21

作者：

El Ali, B ^{[1
]}

El-Ghanam, AM ^{[1
]}

Fettouhi, M ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2001年 / 165卷 / 1-2期

关键词：

homogeneous reaction; oxidation; oxidative cleavage; heteropolyacids; vanadium; benzoin; benzil;

D O I：

10.1016/S1381-1169(00)00453-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heteropolyacids H3+nPMo12-nVnO40 (HPA-n, n = 1-4) catalyze efficiently the oxidation and the oxidative cleavage of benzoin derivatives in the presence of dioxygen. HPA-2 gave the highest total yields in aldehydes and carboxylic esters by using primary alcohols as solvents. No oxidative cleavage products were obtained with secondary or tertiary alcohols. HPA-2 catalyzes the oxidation of benzoin to benzil in the presence of t-BuOH or other polar solvents such THE CH3CN, DME. (C) 2001 Elsevier Science B.V. All rights reserved.

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页码：283 / 290

页数：8

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