Double <i>N</i>-Arylation of Primary Amines: Carbazole Synthesis from 2,2‘-Biphenyldiols
作者:Atsushi Kuwahara、Koji Nakano、Kyoko Nozaki
DOI:10.1021/jo048472+
日期:2005.1.1
The doubleN-arylation of primaryamines with 2,2‘-biphenylylene ditriflates was investigated for the synthesis of multisubstitutedcarbazoles. Palladium complexes supported by 2-dicyclohexylphosphino-2‘-methylbiphenyl or Xantphos [4,5-bis(diphenylphosphino)-9,9-dimethylxanthene] were found to be efficient catalysts for the reaction. The catalysts allow the use of anilines with an electron-donating