Highly enantioselective palladium-catalyzed hydrosilylation of norbornene with trichlorosilane using ferrocenyl ligands

被引：58

作者：

Pioda, G ^{[1
]}

Togni, A ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, ETH Zentrum, Inorgan Chem Lab, CH-8092 Zurich, Switzerland

来源：

TETRAHEDRON-ASYMMETRY | 1998年 / 9卷 / 21期

关键词：

D O I：

10.1016/S0957-4166(98)00409-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Pd-catalyzed hydrosilylation of norbornene with trichlorosilane using different chiral ferrocenyl ligands containing a phosphine and a pyrazole as donors was studied. Both steric and electronic factors affect stereoselectivity in this system. The combination of a sterically bulky pyrazole substituent with a pi-acidic phosphine leads to an enantioselectivity of >99.5% ee. Important substrate electronic effects on stereoselectivity were observed using para-substituted styrenes. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：3903 / 3910

页数：8

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