Cyclization reactions involving cyanoacetylated bisindoles have been studied, providing access to various novel cyclohepta[2,1-b:3,4-b‘]diindole derivatives as well as some related fused pentacyclic systems. Treatment of 3-cyanoacetyl-2,3‘-diindolylmethane with methanesulfonic acid gave 6-(cyanomethyl)indolo[3,2-b]carbazole in a good yield.
涉及cyanoacetylated双
吲哚环化反应进行了研究,提供对各种新颖的环庚[2,1- b:3,4- b ' ]二
吲哚衍
生物,以及一些相关的稠合五系统。用
甲磺酸处理3-
氰基乙酰基-2,3′-二
吲哚基
甲烷,得到6-(
氰基甲基)
吲哚并[3,2- b ]
咔唑,收率很好。