申请人:The Hong Kong Polytechnic University
公开号:US05886182A1
公开(公告)日:1999-03-23
Novel, optically active phosphorous compounds of the formula, ##STR1## wherein R.sup.1 represents hydrogen atoms, straight or branched-chain alkyl groups having from 1 to 6 carbon atoms, R.sup.2 represents hydrogen atoms, halogen atoms, lower alkyl groups (1 to 6 carbon atoms), lower alkoxy groups (1 to 6 carbon atoms), hydroxy group, chiral hydroxyalkyl groups, and amino groups (1.degree., 2.degree., 3.degree.) vinyl groups or allyl groups and R.sup.3 represents phenyl groups, aryl groups, cyclohexyl groups, substituted and unsubstituted cycloalkyl groups, heteroaromatic rings, are described. The compounds of the formula serve as highly useful ligands in the preparation of ruthenium complexes which are effective catalysts for the asymmetric hydrogenation of 2-arylpropenoic acids leading to high valued 2-arylpropionic acids.
该式中的新型光学活性磷化合物,其中R.sup.1代表氢原子,具有1至6个碳原子的直链或支链烷基基团,R.sup.2代表氢原子,卤原子,较低烷基基团(1至6个碳原子),较低烷氧基团(1至6个碳原子),羟基,手性羟基烷基基团和氨基(1级,2级,3级),乙烯基或丙烯基,R.sup.3代表苯基,芳基,环己基,取代和未取代的环烷基基团,杂环芳烃环。该式化合物可用作在制备对2-芳基丙烯酸进行不对称氢化的钌配合物中作为非常有用的配体,从而得到高价值的2-芳基丙酸的有效催化剂。