Greener synthesis using hydrogen peroxide in ethyl acetate of alicyclic ring-fused benzimidazoles and anti-tumour benzimidazolequinones
作者:Martin Sweeney、Michael Gurry、Lee-Ann J. Keane、Fawaz Aldabbagh
DOI:10.1016/j.tetlet.2017.07.102
日期:2017.9
Environmentally-friendly and cost effective hydrogen peroxide in ethyl acetate was used to prepare in high yields pyrrolo[1,2-a]benzimidazoles from commercial o-(pyrrolidin-1-yl)anilines without the requirement for organic-aqueous extraction and chromatography. Six, seven and eight membered ring-fused analogues were similarly obtained in high yields with methanesulfonic acid required for the pyrido[1
使用环境友好且经济高效的乙酸乙酯中的过氧化氢,无需有机水萃取和色谱法即可从商业邻-(吡咯烷基-1-基)苯胺制备高收率的吡咯并[1,2- a ]苯并咪唑。用吡啶[1,2- a ]苯并咪唑所需的甲磺酸,以高收率相似地获得了六,七和八元环稠合的类似物。通过3,6-二甲氧基-2-(环氨基)苯胺的环化,可以高产率获得抗肿瘤苯并咪唑醌衍生物。