Highly selective 1,3-dipolar cycloadditions of captodative olefins 1-acetylvinyl carboxylates to diverse dipoles

被引:23
|
作者
Nagarajan, A [1 ]
Zepeda, G [1 ]
Tamariz, J [1 ]
机构
[1] IPN,ESCUELA NACL CIENCIAS BIOL,DEPT ORGAN CHEM,MEXICO CITY 11340,DF,MEXICO
关键词
D O I
10.1016/0040-4039(96)01546-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Regioselective 1,3-dipolar cycloadditions of captodative 1-acetylvinyl p-nitrobenzoyloxy (1a) with propionitrile oxide, diphenylnitrile imine and diazoalkanes provided the corresponding 5-acetyl- isoxazoles and pyrazoles. Evidence to support the formation of the initial cycloadducts was obtained. The addition of nitrones also proved to be highly regio- and stereoselective. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:6835 / 6838
页数:4
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