Enantioselective cyclopropanation of allylic alcohols with dioxaborolane ligands: Scope and synthetic applications

被引:193
作者
Charette, AB [1 ]
Juteau, H [1 ]
Lebel, H [1 ]
Molinaro, C [1 ]
机构
[1] Univ Montreal, Dept Chim, Montreal, PQ H3C 3J7, Canada
关键词
D O I
10.1021/ja982055v
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A very effective chiral controller has been found for the conversion of allylic alcohols into the corresponding enantiomerically enriched cyclopropanes using bis(iodomethyl)zinc. A variety of chiral, nonracemic cyclopropylmethanols could be obtained according to this method. This methodology was extended with success to the cyclopropanation of unconjugated and conjugated polyenes and homoallylic alcohols. The cyclopropanation of allylic carbamates has also been investigated with this system, but it was found that enantioenriched cyclopropylmethylamines are best prepared from enantioenriched cyclopropylmethanols.
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页码:11943 / 11952
页数:10
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