Synthesis of (R)-2-diphenylphosphino-2′-diphenylphosphinomethyl-1, 1′-binaphthyl and its use for asymmetric hydrogenation of α-alkylstyrenes
作者:Kohji Inagaki、Tetsuo Ohta、Kyoko Nozaki、Hidemasa Takaya
DOI:10.1016/s0022-328x(96)06712-5
日期:1997.3
A new chiral bisphosphine ligand ((R)-2-diphenylphosphino-2′-diphenylphosphinomethyl-1,1′-binaphthyl) was synthesized from enantiomerically pure (R)-1,1′-binaphthalene-2,2′-diol. Rhodium(I) complexes of this bisphosphine ligand have been used as catalysts for asymmetric hydrogenation of α-alkylstyrenes to give the corresponding aromatic hydrocarbons in up to 77% ee.
由对映体纯的(R)-1,1'-联萘-2,2'-二醇合成了新的手性双膦配体((R)-2-二苯基膦-2'-二苯基膦甲基-1,1'-联萘)。该双膦配体的铑(I)配合物已被用作α-烷基苯乙烯不对称加氢的催化剂,得到相应的芳香烃的ee含量高达77%。