Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals R1 are identical or different and are each C1-C4-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; R2 is an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and R3 is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R2 and R3 are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R4 is an unsubstituted or C1-C6-alkyl-, C1-C6-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.
化合物的公式(I)以外消旋体、对映纯二对映体或二对映体混合物的形式出现,其中基团R1相同或不同,且每个基团均为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为芳香族碳氢基团或C-键合的杂环碳氢基团,R3为脂肪或C-键合的杂脂肪碳氢基团;R2和R3相同或不同,且每个基团均为脂肪或C-键合的杂脂肪碳氢基团;R4为未取代或C1-C6烷基、C1-C6烷氧基或卤素取代的碳氢基团;A为次级
氨基团。这些化合物是
金属配合物的
配体,适用于均相不对称氢化反应催化剂。