申请人:Solvias AG
公开号:US06498256B2
公开(公告)日:2002-12-24
Compounds of formulae I and Ia,
wherein
X1 is secondary phosphino; R3 is hydrogen, a hydrocarbon radical having from 1 to 20 carbon atoms, a heterohydrocarbon radical, bonded via a carbon atom, having from 2 to 20 atoms and at least one hetero atom selected from the group O, S and NR, or ferrocenyl; R is H or C1-C4alkyl; each R4 individually or both R4 together are a hydrocarbon radical having from 1 to 20 carbon atoms; and R01 and R02 are each independently of the other a hydrogen atom or a hydrocarbon radical having from 1 to 20 carbon atoms, are chiral ligands for metal complexes with metals of sub-groups I and VII, which are catalysts for asymmetric addition reactions, for example of hydrogen, to prochiral unsaturated organic compounds.
化合物I和Ia的式子,其中X1是次磷酰基;R3是氢,具有1至20个碳原子的碳氢基团,通过碳原子与至少一个来自O、S和NR的杂原子中的一个的杂原子键合的杂碳氢基团,或者是二茂铁基;R是H或C1-C4烷基;每个R4单独或两个R4一起是具有1至20个碳原子的碳氢基团;R01和R02各自独立地是氢原子或具有1至20个碳原子的碳氢基团,是亚组I和VII金属配合物的手性配体,这些金属配合物是不对称加成反应的催化剂,例如对于不对称加成氢到非手性不饱和有机化合物。