Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals R
1
are identical or different and are each C
1
-C
4
-alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; R
2
is an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and R
3
is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R
2
and R
3
are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R
4
is an unsubstituted or C
1
-C
6
-alkyl-, C
1
-C
6
-alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group, are ligands for metal complexes which are suitable as catalysts for homogeneous enantioselective hydrogenation.
公式(I)的抽象化合物以外消旋体、对映纯二对映体或二对映体混合物的形式存在,其中基团R1相同或不同,每个为C1-C4-烷基;m为0或1至4的整数;n为0或1至3的整数;p为0或1至5的整数;R2为
芳香烃基或C键合杂环碳氢基;R3为脂肪基或C键合杂脂肪碳氢基;R2和R3相同或不同,每个为脂肪基或C键合杂脂肪碳氢基;R4为未取代或C1-C6烷基、C1-C6烷氧基或卤素取代的碳氢基;A为次级
氨基,是
金属配合物的
配体,适用于均相对映选择性氢化反应的催化剂。