申请人:BASF SE
公开号:US20190211040A1
公开(公告)日:2019-07-11
The present invention relates to chiral compounds with two optically active phosphorus atoms, chiral transition metal catalysts which comprise these compounds as ligands, a process for preparing the P-chiral compounds and processes for asymmetric synthesis using the chiral transition metal catalysts. The present invention specifically relates to a process for preparing an optically active carbonyl compound by asymmetric hydrogenation of a prochiral α,β-unsaturated carbonyl compound with hydrogen in the presence of an optically active transition metal catalyst according to the invention. Yet more specifically, the present invention relates to a process for the asymmetric hydrogenation of citral, and also a process for preparing optically active menthol.
本发明涉及具有两个光学活性磷原子的手性化合物,包括这些化合物作为配体的手性过渡金属催化剂,制备P-手性化合物的方法以及利用手性过渡金属催化剂进行不对称合成的方法。本发明具体涉及一种通过在本发明的光学活性过渡金属催化剂存在下,利用氢不对称氢化一种丙烯基α,β-不饱和羰基化合物制备光学活性羰基化合物的方法。更具体地说,本发明涉及柠檬醛的不对称氢化方法,以及制备光学活性薄荷醇的方法。