Facile One-Pot Synthesis of 6-Monosubstituted and 6,12-Disubstituted 5,11-Dihydroindolo[3,2-<i>b</i>]carbazoles and Preparation of Various Functionalized Derivatives
作者:Rong Gu、Ahmed Hameurlaine、Wim Dehaen
DOI:10.1021/jo0711337
日期:2007.9.1
converted to various functional derivatives. Both N-alkylation and N-arylation were successfully accomplished, and azo-coupling, formylation, as well as bromination were performed in a regioselective way leading to the formation of novel functional 6,12-disubstituted indolo[3,2-b]carbazoles. Starting from a monoformylated indolocarbazole, novel benzimidazolyl-substituted derivatives were synthesized,
一种简便的三步一锅法,以中等至良好的产率合成各种新型的6-单取代和6,12-二取代的5,11-二氢吲哚并[3,2- b ]咔唑基于吲哚和醛与催化量的碘的缩合,然后用原酸酯进行酸催化的分子内环化反应,已经开发出了%(%)。母体吲哚[3,2- b ]咔唑(ICZs)可以转化为各种功能衍生物。N-烷基化和N-芳基化均成功完成,偶氮偶联,甲酰化和溴化反应均以区域选择性方式进行,从而形成了新的功能性6,12-二取代的吲哚[3,2- b]。]咔唑。从单甲酰化吲哚并咔唑开始,合成了新的苯并咪唑基取代的衍生物,而单溴化结构单元上的Suzuki交叉偶联提供了一条通向功能化芳基化ICZ的新途径。