Phospinite-imidazolines and metal complexes thereof
申请人:Menges Federik
公开号:US20070010493A1
公开(公告)日:2007-01-11
Compounds of the formulae (I) and (Ia) where X
1
is secondary phosphino; R
3
is a hydrocarbon radical having from 1 to 20 C atoms, a heterohydrocarbon radical which has from 2 to 20 atoms and at least one heteroatorn selected from the group consisting of O, S, NH and NR, or an —SO
2
—R radical; R is C
1
-C
18
-alkyl, phenyl or benzyl; the radicals R
4
are each, or the two radicals R4 together a hydrocarbon radical having from 1 to 20 C atoms; R
01
is a hydrocarbon radical having from 1 to 20 C atoms; and R
02
and R′
o2
are each, independently of one another, a hydrogen atom or independently have the meaning of R
01
, or R
01
and R
02
together with the C atom to which they are bound form a three- to eight-membered hydrocarbon or hetero hydrocarbon ring. The compounds are chiral ligands for complexes of metals of transition groups I and VIII which act as catalysts for asymmetric additions, for example of hydrogen, onto prochiral unsaturated organic compounds.