A strongly positive dendrimer effect in asymmetric catalysis: allylic aminations with Pyrphos-palladium functionalised PPI and PAMAM dendrimers

被引：85

作者：

Ribourdouille, Y

Engel, GD

Richard-Plouet, M

Gade, LH ^{[1
]}

机构：

[1] Univ Strasbourg, Inst Le Bel, Lab Chim Organomet & Catalyse, UMR 7513, F-67070 Strasbourg, France

[2] Inst Phys & Chim Mat Strasbourg, UMR 7504, F-67037 Strasbourg, France

[3] Inst Mat Jean Rouxel, Lab Chim Solides 2, F-44322 Nantes, France

来源：

CHEMICAL COMMUNICATIONS | 2003年 / 11期

关键词：

D O I：

10.1039/b302155f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A remarkable and unprecedented increase in catalyst selectivity in dendrimer catalysis is observed for the Pyrphos-Pd catalysed allylic amination of 1,3-diphenyl-1-acetoxypropene as a function of the dendrimer generation (with up to 64 metal sites). This steady increase in ee-values for the allylic amination is less pronounced for the poly(propyleneimine)derived catalysts than for the corresponding palladium-PAMAM dendrimer catalysts for which an increase in selectivity from 9% ee for a mononuclear reference system to 69% ee for the Pd-64-dendrimer was found.

引用

页码：1228 / 1229

页数：2

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