申请人:SUMIKA FINE CHEMICALS Company, Limited
公开号:EP0713848A1
公开(公告)日:1996-05-29
The present invention relates to a process for producing optically active halomethyl phenyl carbinols of the formula (1), comprising reducing halomethyl phenyl ketones of the formula (2) using an asymmetric reducing agent obtained from boranes and optically active α-phenyl-substituted-β-amino alcohols of the formula (3) or optically active α-non-substituted-β-amino alcohols of the formula (4).
The present invention further relates to a process for producing optically active carbinols, comprising reacting with an unsymmetric ketone, an asymmetric reducing agent obtained from optically active β-amino alcohols of the formula (5), a metal boron hydride and Lewis acid or lower dialkyl sulfuric acid.
本发明涉及一种生产光学活性的式(1)卤代甲基苯基甲醇的工艺,包括使用从硼烷和光学活性的式(3)α-苯基取代-β-氨基醇或光学活性的式(4)α-非取代-β-氨基醇中得到的不对称还原剂还原式(2)卤代甲基苯基酮。
本发明还涉及一种生产光学活性烷醇的工艺,包括与不对称酮、从式(5)光学活性β-氨基醇中得到的不对称还原剂、金属硼氢化物和路易斯酸或低级二烷基硫酸反应。