Ethyl N-(diphenylmethylene)glycinate as anionic glycine equivalent. Monoalkylation, dialkylation and Michael additions under solid-liquid phase-transfer catalysis.

被引:37
作者
Lopez, A
MorenoManas, M
Pleixats, R
Roglans, A
Ezquerra, J
Pedregal, C
机构
[1] UNIV AUTONOMA BARCELONA,DEPT CHEM,E-08193 BARCELONA,SPAIN
[2] CTR INVEST LILLY,E-28130 MADRID,SPAIN
关键词
D O I
10.1016/0040-4020(96)00395-X
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Ethyl N-(diphenylmethylene)glycinate, 1, undergoes monoalkylations, dialkylations and Michael additions to ethylenic and acetylenic accepters under appropriate solid-liquid phase transfer catalysis conditions. Further transformations of the alpha-disubstituted ketimines lead to alpha-alkylated aspartic and glutamic acid derivatives 10, 15, 19 and 26, to bicyclic amino, acids or denrivatives featuring pyrazolone and isoxazolone moieties 30 and 33, and to alpha-substituted (h)-3,4-dehydroglutamic acids. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:8365 / 8386
页数:22
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