Synthetic Routes to Isomeric Imidazoindoles by Regioselective Ring‐Opening of Activated Aziridines Followed by Copper‐Catalysed C–N Cyclization
作者:Masthanvali Sayyad、Imtiyaz Ahmad Wani、Deo Prakash Tiwari、Manas K. Ghorai
DOI:10.1002/ejoc.201700267
日期:2017.4.26
new synthetic routes that deliver substituted imidazoindoles in high yields with excellent ee values have been developed. The reactions proceed through ring-opening of activated aziridines with 2,2-dibromovinylanilines or 2-bromoindoles, followed by a Cu-catalysed domino C–N,C–N-cyclization, or a C–N cyclization, respectively. The first route gives rise to one regioisomer, and the second route gives
已经开发了两种新的合成路线,它们以高产率提供具有优异 ee 值的取代咪唑并吲哚。反应通过活化的氮丙啶与 2,2-二溴乙烯基苯胺或 2-溴吲哚开环进行,然后分别进行 Cu 催化的多米诺 C-N、C-N-环化或 C-N 环化。第一条路线产生一种区域异构体,第二条路线产生另一种。