Dendritic phosphonates and the in situ assembly of polyperoxophosphotungstates:: Synthesis and catalytic epoxidation of alkenes with hydrogen peroxide

被引：30

作者：

Vasylyev, MV

Astruc, D

Neumann, R ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Organ Chem, IL-76100 Rehovot, Israel

[2] Univ Bordeaux 1, Nanosci & Catalysis Grp, LCOO, CNRS,UMR 5802, F-33405 Talence, France

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2005年 / 347卷 / 01期

关键词：

catalysis; dendrimer; oxidation; phosphonates; polyoxometalates;

D O I：

10.1002/adsc.200404207

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

First and second-generation rigid dendrimers based on polyphenylated tetrahedral adamantane cores with four or sixteen peripheral phosphonate moieties, PD1 and PD2, respectively, were synthesized and characterized. Further reaction of the dendritic phosphonates with tungstic acid in the presence of hydrogen peroxide led to the stepwise in situ formation of mono- and dinuclear phosphoperoxotungstates. These assemblies were effective catalysts for the epoxidation of alkenes in an aqueous acetonitrile solvent.

引用

页码：39 / 44

页数：6

共 45 条

[1] Dendrimeric organotelluride catalysts for the activation of hydrogen peroxide. Improved catalytic activity through statistical and stereoelectronic effects [J].