1,4-Thiazepines, 1,4-Benzothiazepin-5-ones, and 1,4-Benzothioxepin Orthoamides via Multicomponent Reactions of Isocyanides
作者:Stefano Marcaccini、Daniel Miguel、Tomás Torroba、María García-Valverde
DOI:10.1021/jo026614z
日期:2003.4.1
The intramolecular Ugi four-component condensation between 6-oxo-4-thiacarboxylic acids, benzylamines, and cyclohexyl isocyanide gave hexahydro-1,4-thiazepin-5-ones and 1,4-benzothiazepin-5-ones, in some cases with high stereoselectivity, and the intramolecular Passerini three-component reaction, in the presence of catalytic amine, gave tetracyclic 1,4-benzothioxepin orthoamides.
6-氧代-4-硫代羧酸,苄基胺和环己基异氰酸酯之间的分子内Ugi四组分缩合反应生成六氢-1,4-噻唑啉-5-酮和1,4-苯并噻唑-5-酮,在某些情况下具有较高的在催化胺的存在下,通过立体选择性和分子内Passerini三组分反应,得到四环1,4-苯并噻吩基原酰胺。