Novel synthesis of 4,4-difluoropyrido[4,3-b]indoles via intramolecular Heck reaction
作者:M. Madaiah、M.K. Prashanth、H.D. Revanasiddappa
DOI:10.1016/j.tetlet.2012.12.115
日期:2013.3
Various difluoropyridoindoles were synthesized via a palladium-catalyzed intramolecular Heck reaction as a key step. Thus, ortho-bromoanilines and difluoropiperidinone were treated with (PPh3)2PdCl2 and base in pyridine to give the regioselective cyclized heterocycles in modest to satisfactory yields.
作为关键步骤,通过钯催化的分子内Heck反应合成了各种二氟吡啶并吲哚。因此,用(PPh 3)2 PdCl 2和吡啶中的碱处理邻溴代苯胺和二氟哌啶酮,以适度令人满意的产率得到区域选择性环化的杂环。