申请人:Kazuo Achiwa
公开号:US04985567A1
公开(公告)日:1991-01-15
New chiral phosphinopyrrolidine compounds of the general formula: ##STR1## wherein R.sup.1 is hydrogen or --COA.sup.1, --COOA.sup.2, --CONHA.sup.3, --SO.sub.2 A.sup.4 or --PO(A.sup.5).sub.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4 and A.sup.5 each represents independently alkyl or aryl, R.sup.2 is phenyl, di(lower-alkyl)aminophenyl, lower-alkoxyphenyl or 3,5-dimethyl-4-methoxyphenyl, and R.sup.3 is phenyl, lower-alkylphenyl, di(lower-alkyl)aminophenyl, lower-alkoxyphenyl or 3,5-dimethyl-4-methoxyphenyl, with the proviso that R.sup.2 and R.sup.3 may not simultaneously by phenyl, p-di(lower-alkyl)-aminophenyl or p-lower-alkoxyphenyl, as well as the use of these compounds as ligand for a metal complex catalyst for asymmetric synthesis of optically active compounds. The new chiral phosphinopyrrolidine compounds are useful ligands which attain both of high optical yield and high reaction efficiency in catalytic asymmetric reduction.
新的手性磷氮杂环丙氨酸化合物的一般式为:##STR1## 其中,R.sup.1是氢或--COA.sup.1,--COOA.sup.2,--CONHA.sup.3,--SO.sub.2A.sup.4或--PO(A.sup.5).sub.2,A.sup.1,A.sup.2,A.sup.3,A.sup.4和A.sup.5分别独立表示烷基或芳基,R.sup.2是苯基,二(低烷基)氨基苯基,低烷氧基苯基或3,5-二甲基-4-甲氧基苯基,R.sup.3是苯基,低烷基苯基,二(低烷基)氨基苯基,低烷氧基苯基或3,5-二甲基-4-甲氧基苯基,但是R.sup.2和R.sup.3不能同时为苯基,对位二(低烷基)氨基苯基或对位低烷氧基苯基,以及这些化合物作为金属配合物催化剂的配体用于不对称合成光学活性化合物。这些新的手性磷氮杂环丙氨酸化合物是有用的配体,可在催化不对称还原反应中实现高光学产率和高反应效率。