Chemo- and regioselective intramolecular hydrosilylative carbocyclization of allenynes

被引：21

作者：

Shibata, T ^{[1
]}

Kadowaki, S

Takagi, K

机构：

[1] Waseda Univ, Dept Chem, Sch Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[2] Okayama Univ, Dept Chem, Fac Sci, Okayama 7008530, Japan

来源：

ORGANOMETALLICS | 2004年 / 23卷 / 17期

关键词：

D O I：

10.1021/om049677b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Rhodium complex catalyzed hydrosilylative carbocyclization of various allenynes and trialkoxysilanes proceeded smoothly under an atmosphere of carbon monoxide to give hydrosilylated cyclic products. The intramolecular coupling of allene and alkyne is chemo- and regioselective: silylrhodation to an internal olefinic moiety of the allene proceeded exclusively, and subsequent carbometalation to the alkyne provided cyclic 1,4-dienes. The use of alkoxysilane and the substituents on the allene terminus play pivotal roles in the selectivity.

引用

页码：4116 / 4120

页数：5

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