| 摘要 |
<p>The present invention provides an organic metal compound, a ligand, an asymmetric catalyst, and a process for preparing optically-active alcohols using the asymmetric catalyst. The organic metal compound of the present invention is expressed by the following general formula (1):
wherein in general formula (1), R 1 and R 2 are a mutually identical or mutually different, unsubstituted or substituted alkyl group, aryl group, cycloalkyl group, or R 1 and R 2 are bound to form an alicyclic ring, R 3 is a hydrogen atom or an alkyl group, R 4 is a branched alkyl group or an alkyl group that does or does not form a ring by itself, or an unsubstituted or substituted aryl group, or an unsubstituted or substituted heterocyclic group, Ar is an unsubstituted or substituted cyclopentadienyl group that is bound to M via a À bond, or an unsubstituted or substituted benzene, X is a hydride group or an anionic group, M is ruthenium, rhodium or iridium, L is a solvent molecule or a water molecule, 1 is 1 or 2, m is an integer from 0 to 2, n is 0 or 1, and when n is 0, X does not exist, and * represents asymmetric carbon, wherein R 4 is not a camphor group, a camphor derivative group, an isopropyl group or a phenyl group whenever R 1 and R 2 are both a phenyl group.</p> |
