噻唑烷类手性配体在不对称硅氢化反应中的应用(Ⅱ)

噻唑烷类手性配体在不对称硅氢化反应中的应用（Ⅱ）＊李弘姚金水何炳林（南开大学高分子化学研究所吸附与分离功能高分子材料国家重点实验室，天津３０００７１）关键词手性配体，铑络合物，噻唑烷，苯乙酮，不对称硅氢化自８０年代末期以来，合成了许多高活性、高选择性...

SYNTHESIS OF CHIRAL THIAZOLIDINE LIGANDS AND THEIR APPLICATION TO THE ASYMMETRIC HYDROSILYLATION

Four 1,3 thiazolidine chiral ligands with various aromatic substituents were synthesized by condensation of L cysteine or its ester with aldehyde or ketone. The catalysts prepared by the reaction of these ligands with [Rh(COD) Cl] 2 were used to catalyze the asymmetric hydrosilylation of acetophenone. Two high reactive and selective chiral ligands with pyridyl were sifted. The chemical yield of the catalytic reaction is up to 90%, the optical yield could reach about 80% (e.e). The coordination structure of the catalysts was discussed.