Synthesis and first applications of a new family of chiral monophosphine ligand: 2,5-diphenylphosphospholanes
作者:Frédéric Guillen、Michael Rivard、Martial Toffano、Jean-Yves Legros、Jean-Claude Daran、Jean-Claude Fiaud
DOI:10.1016/s0040-4020(02)00554-9
日期:2002.7
The cyclic phosphinic acid 1-hydroxy-1-r-oxo-2c,5-t-diphenylphospholane was synthesized and resolved into enantiomers through fractional crystallization of the quinine salts. The P-phenyl, P-methyl and P-benzyl tertiary phosphine oxides were obtained from the secondary phosphine oxide, reduction of the oxides afforded the corresponding tertiary P-phenyl and P-benzyl phosphines. Hydrogenation of prochiral
环状次膦酸1-羟基-1- [R -氧代- 2 Ç,5-吨-diphenylphospholane合成并通过奎宁盐的分级结晶拆分成的对映体。该P -苯基,P -甲基和P -苄基叔膦氧化物从二次膦氧化物得到,还原,得到相应的叔氧化物的P -苯基和P -苄基膦。前手性酰胺的氢化反应用Rh /(S,S)-1-1,2c ,5-叔三苯基膦烷催化体系进行。甲基(Z)-氢化N-乙酰基脱氢肉桂酸酯,得到93%ee的N-乙酰基苯丙氨酸酯。