Use of chiral Ti(IV) complexes in the cycloaddition of C,N-diphenylnitrone to tert-butyl vinyl ether

被引：18

作者：

Bayón, P ^{[1
]}

de March, P ^{[1
]}

Espinosa, M ^{[1
]}

Figueredo, M ^{[1
]}

Font, J ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, Dept Quim, Bellaterra 08193, Spain

来源：

TETRAHEDRON-ASYMMETRY | 2000年 / 11卷 / 08期

关键词：

D O I：

10.1016/S0957-4166(00)00115-4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The 1,3-dipolar cycloaddition of C,N-diphenylnitrone to tert-butyl vinyl ether in the presence of several chiral Ti(IV) species which incorporate different bidentate Ct-symmetrical ligands has been investigated. Several complexes have shown very efficient catalytic activity. The endo/exo selectivity of the process can be dramatically reversed in relation to the uncatalysed reaction, but low enantioselectivities up to 41% ee are found. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1757 / 1765

页数：9

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