5-bromo-4-oxo-4,5,6,7-tetrahydro-indole-1,3-dicarboxylic acid 1-tert-butyl ester 3-ethyl ester 、
盐酸乙脒 在
氯仿 、
甲醇 作用下,
以
1,4-二氧六环 为溶剂,
反应 16.17h,
以to yield 2-methyl-3,4,5,6-tetrahydro-imidazo[4,5-e]indole-8-carboxylic acid ethyl ester as a white solid (30%)的产率得到2-methyl-3,4,5,6-tetrahydro-imidazo[4,5-e]indole-8-carboxylic acid ethyl ester