Synthesis of Chiraphos via asymmetric hydrogenation of 2,3-bis(diphenylphosphinoyl)buta-1,3-diene
作者:Valentina Beghetto、Ugo Matteoli、Alberto Scrivanti
DOI:10.1039/a908447i
日期:——
(S,S)-2,3-Bis(diphenylphosphinoyl)butane, an immediate precursor of (S,S)-CHIRAPHOS, can be obtained with 70% de and 71% op via double asymmetric hydrogenation of 2,3-bis(diphenylphosphinoyl)buta-1,3-diene in the presence of Ru(S)-BINAP catalysts.
(S,S)-2,3-双(二苯基膦酰基)丁烷是 (S,S)-CHIRAPHOS 的直接前体,可通过 2,3-双(在 Ru(S)-BINAP 催化剂存在下的二苯基膦酰基)buta-1,3-diene。