Cyclization/hydrosilylation of functionalized diynes catalyzed by a cationic rhodium bis(phosphine) complex

被引：38

作者：

Liu, C ^{[1
]}

Widenhoefer, RA ^{[1
]}

机构：

[1] Duke Univ, Paul M Gross Chem Lab, Durham, NC 27708 USA

来源：

ORGANOMETALLICS | 2002年 / 21卷 / 25期

关键词：

D O I：

10.1021/om020643i

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The cationic rhodium complex [Rh(BINAP)(COD)](+) BF4- (2) [BINAP = (+/-)-2,2'-bis(diphenylphosphino)binaphthyll catalyzed the cyclization/hydrosilylation of 5,5-dicarbomethoxy2,7-nonadiyne (1) and triethylsilane to form (E,Z)-1,1-dicarbomethoxy-3-ethylidene-4-(1-triethylsilylethylidene)cyclopentane (3) in 77% yield with greater than or equal to50:1 isomeric purity. A number of functionalized 1,6-diynes that possessed internal alkynes in addition to I underwent cyclization/hydrosilylation catalyzed by 2 to form silylated 1,2-dialkylidenecycloalkanes in moderate to good yield with high diastereoselectivity.

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页码：5666 / 5673

页数：8

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