The chiral phosphine ligand (R)-1,2-bis(diphenylphosphino)-1-cyclohexylethane, when complexed to Rh(I), functions as a superior chiral hydrogenation catalyst. The chiral phosphine ligand is more stereochemically rigid than previous compounds; consequently, virtually optically pure materials can be produced from the chiral hydrogenation of prochiral compounds using the catalyst of this invention. This catalyst is especially useful in the chiral hydrogenation of alpha-acylamido acrylic acids.
手性
膦配体(R)-1,2-双(
二苯基膦)-1-环己基
乙烷与Rh(I)形成配合物后,可作为优异的手性加氢催化剂。这种手性
膦配体比以前的化合物更具有立体
化学刚性,因此可以使用此发明的催化剂从手性氢化的原始化合物中生产出几乎光学纯的材料。这种催化剂在α-酰胺基
丙烯酸的手性氢化中特别有用。