Catalytic asymmetric carbomagnesiation of unactivated alkenes. A new, effective, active, cheap and recoverable chiral zirconocene.

被引：49

作者：

Bell, L

Whitby, RJ

Jones, RVH

Standen, MCH

机构：

[1] UNIV SOUTHAMPTON,DEPT CHEM,SOUTHAMPTON SO17 1BJ,HANTS,ENGLAND

[2] ZENECA FINE CHEM MFG ORG,GRANGEMOUTH FK3 8XG,STIRLINGSHIRE,SCOTLAND

来源：

TETRAHEDRON LETTERS | 1996年 / 37卷 / 39期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0040-4039(96)01561-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The ethylmagnesiation of terminal alkenes catalysed by (R,R)-ethylene-1,2-bis(eta(5)-4,5,6,7-tetrahydro-1-indenyl) zirconium (R)-1,1'-binaphth-2,2'-diolate gave low turnovers and enantioexcesses. A novel C-i symmetric zirconocene dichloride CpCp'ZrCl2 (Cp = C5H5, CP' = 1-neomenthyl-4,5,6,7-tetrahydroindenyl) was prepared which gave better enantioselectivity, is cheaper to make, catalytically more active, and recoverable. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：7139 / 7142

页数：4

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