申请人:——
公开号:US04879389A1
公开(公告)日:1989-11-07
New chiral phosphinopyrrolidine compounds of the general formula: ##STR1## wherein R.sup.1 is a hydrogen atom, --COR, --COOR, --CONHR or --SO.sub.2 --R where R is an alkyl or aryl group, R.sup.2 and R.sup.3 each represents independently an aryl group which may have a substituent or substituents, and R.sup.4 and R.sup.5 each represents independently an aliphatic or cycloaliphatic hydrocarbyl group which may have a substituent or substituents, 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.
新手性磷氮杂环丙氨酸酯化合物的一般式为:##STR1## 其中R.sup.1是氢原子,-COR,-COOR,-CONHR或-SO.sub.2-R,其中R是烷基或芳基基团,R.sup.2和R.sup.3各自独立地表示可能具有取代基的芳基基团,而R.sup.4和R.sup.5各自独立地表示可能具有取代基的脂肪或环脂基基团。这些化合物可用作金属配合物催化剂的配体,用于光学活性化合物的不对称合成。新的手性磷氮杂环丙氨酸酯化合物是有用的配体,可在催化不对称还原反应中同时实现高光学产率和高反应效率。