作者:A. Miyashita、H. Takaya、T. Souchi、R. Noyori
DOI:10.1016/s0040-4020(01)82411-x
日期:1984.1
Racemic 2, 2'-bis(diphenylphosphino)-l, 1'-binaphthyl has been synthesized from 2, 2'-dihydroxy-l, l'-binaphthyl in two steps and resolved into optically pure (R)-(+) and (S) (-) enantiomers by the use of (+)-di-μ-chlorobis[(S)-N,N-dimethyl-α-phenylethylamine-2C,N]dipalladium. This new axially dissymmetric bis(triaryl)phosphine serves as an excellent ligand for Rh(l)-catalyzed asymmetric hydrogenations
外消旋的2,2'-双(二苯基膦基)-1,1'-联萘已由2,2'-二羟基-1,1'-联萘分两步合成,拆分为光学纯的(R)-(+)和(S)(-)对映异构体,其使用(+)-二-μ-氯代双[(S)-N,N-二甲基-α-苯基乙胺-2C,N]二钯。这种新的轴向不对称双(三芳基)膦可作为Rh(l)催化的α-(酰基氨基)丙烯酸或酯不对称氢化的出色配体。在31 P-NMR测量的基础上讨论了控制对映选择性和机理方面的因素