Friedel-Crafts reaction of activated benzene rings with captodative and electron-deficient alkenes. A one-step synthesis of the natural product methyl 3-(2,4,5-trimethoxyphenyl)propionate

被引:19
作者
Aguilar, R [1 ]
Benavides, A [1 ]
Tamariz, J [1 ]
机构
[1] Inst Politecn Nacl, Escuela Nacl Ciencias Biol, Dept Quim Organ, Mexico City 11340, DF, Mexico
关键词
Friedel-Crafts; captodative olefins; methyl 3-(2,4,5-trimethoxyphenyl)propionate;
D O I
10.1081/SCC-200026193
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Electrophilic aromatic substitution of activated benzenes with the captodative olefin 1-acetylvinyl-1-p-nitrobenzoate (9), and with the electron-deficient alkenes methyl acrylate (8a), methylvinylketone (8b), and acrolein (8c) were evaluated under Lewis acid catalysis. Olefin 9 proved to be much more reactive than alkenes 8a-8c. We also describe a one-step synthesis of the antifungal and larvicidal natural product methyl 3-(2,4,5-trimethoxyphenyl)propionate (6), by reaction of 1,2,4-trimethoxybenzene with 8a under microwave irradiation.
引用
收藏
页码:2719 / 2735
页数:17
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