Enantioselective epoxidation of conjugated Z-olefins with newly modified Mn(salen) complex

被引：12

作者：

Egami, Hiromichi ^{[1
]}

Irie, Ryo ^{[1
]}

Sakai, Ken ^{[1
]}

Katsuki, Tsutomu ^{[1
]}

机构：

[1] Kyushu Univ 33, Grad Sch, Fac Sci, Dept Chem,Higashi Ku, Fukuoka 8128581, Japan

来源：

CHEMISTRY LETTERS | 2007年 / 36卷 / 01期

关键词：

D O I：

10.1246/cl.2007.46

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chiral Mn(salen) complex 3 bearing a 1-ethyl-1-methylpropy1 group at C3, C3', C5, and C5' was found to induce higher asymmetry in the epoxidation of conjugated Z-olefins, especially less nucleophilic ones, in the presence of 4-phenylpyridine Noxide than complex 1 bearing a t-butyl group at the same carbons. The higher enantioselectivity was considered to be attributable to Me-in-plane conformation of the 1-ethyl-1-methylpropy1 group at C3 and C3'.

引用

页码：46 / 47

页数：2

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