| abstract |
Disclosed is a novel chiral iridium aqua complex which can be used for an asymmetric transfer hydrogenation reaction of a carbonyl compound. Specifically disclosed is a chiral iridium aqua complex represented by the following formula (1). (1) (In the formula, R1 and R2 may be the same or different and represent a halogen atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a haloalkoxy group having 1-6 carbon atoms, an aryl group having at least one substituent selected from the group consisting of a nitro group, a carboxyl group and a cyano group, or the like; and R3 and R4 may be the same or different and represent an alkyl group or the like.) |