Regiospecific Formations of Thieno[3,2-<i>a</i>]indolizine and Thieno[2,3-<i>b</i>]indolizine Derivatives
作者:Akikazu Kakehi、Suketaka Ito、Shin-ichi Matsumoto、Yuichiro Morimoto
DOI:10.1246/cl.1987.2043
日期:1987.10.5
The alkaline treatment of ethyl l-cyano-2-(ethoxycarbonylmethylthio)indolizine-3-carboxylates and diethyl 2-(ethoxycarbonylmethylthio)indolizine-1,3-dicarboxylates afforded the corresponding diethyl 1-aminothieno[3,2-a]indolizine-2,4-dicarboxylates and diethyl 3-hydroxythieno[2,3-b]indolizine-2,9-dicarboxylates in good yields.
对乙基-l-
氰基-2-(乙氧羰基甲基
硫代)
吲哚嗪-3-
羧酸酯和
二乙基-2-(乙氧羰基甲基
硫代)
吲哚嗪-1,3-二
羧酸酯进行碱性处理,可得到相应的
二乙基-1-
氨基
噻吩并[3,2-a]
吲哚嗪-2,4-二
羧酸酯和
二乙基-3-羟基
噻吩并[2,3-b]
吲哚嗪-2,9-二
羧酸酯,且收率较高。