申请人:Nissan Chemical Industries, Ltd.
公开号:US05723652A1
公开(公告)日:1998-03-03
The invention is to provide an asymmetric reaction catalyst useful for the production of medical or agricultural chemicals or intermediates thereof. The catalyst comprises an optically active monophosphino carboxylic acid derivative represented by the formula (I): ##STR1## where R.sup.1 represents a C.sub.1-6 alkyl group or phenyl group which may be optionally substituted with a C.sub.1-4 alkyl group or C.sub.1-4 alkoxy group, R.sup.2 represents a C.sub.1-4 alkyl group, R.sup.3 and R.sup.4 each represents independently a hydrogen atom, C.sub.1-4 alkyl group or phenyl group which may be optionally substituted with a C.sub.1-4 alkyl or C.sub.1-4 alkoxy group and a transition metal compound.
本发明旨在提供一种用于生产医药或农业化学品或其中间体的不对称反应催化剂。该催化剂包括一种光学活性的单膦酸羧酸衍生物,其表示为公式(I):##STR1## 其中,R.sup.1表示C.sub.1-6烷基或苯基,可以选择性地用C.sub.1-4烷基或C.sub.1-4烷氧基置换;R.sup.2表示C.sub.1-4烷基;R.sup.3和R.sup.4各自独立地表示氢原子、C.sub.1-4烷基或苯基,可以选择性地用C.sub.1-4烷基或C.sub.1-4烷氧基置换;以及过渡金属化合物。