Chiral copper complex and production processes thereof and using the same
AssigneeSumitomo Chemical Company, Limited
InventorsMasashi Kamitamari, Gohfu Suzukamo, Michio Yamamoto, Koji Hagiya, Makoto Itagaki
Life of this patent
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Abstract
There is disclosed an optically active salicylideneaminoalcohol compound of formula (1): wherein R1 represents an alkyl group or the like, R2 represents an aryl group and the like, and when X1 represents a nitro, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 is a hydrogen atom, X2 is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration, and a chiral copper complex produced from the optically active salicylidenaminoalcohol compound and a copper compound.
Claims9
An optically active salicylideneaminoalcohol compound of formula (1):
- wherein
- R1 represents an alkyl group which may be substituted with a group selected from an alkoxy group, an aralkyloxy group, an aryloxy group and cycloalkoxy group, an aralkyl, aryl or cycloalkyl group all of which may be substituted with a group selected from an alkyl group, an alkoxy group, an aralkyloxy group, an aryloxy group and a cycloalkoxy group,
- R2 represents an alkyl group, a cycloalkyl group, or an aralkyl or phenyl group which may be substituted with a group selected from an alkyl group, an alkoxy group, an aralkyloxy group, an aryloxy group and a cycloalkoxy group,
- when X1 represents a nitro group, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 is a hydrogen atom, X2 is a fluorine atom;
- and
- the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration.
A method for producing a chiral copper complex of formula (1)′:
- wherein R1 and R2 are the same or different and independently represent an alkyl group, an aralkyl group, a phenyl group, a 2-methoxyphenyl group, a 2-tert-butoxy-5-tert-butylphenyl group, or a 2-octyloxy-5-tert-butylphenyl group, when X1 represents a nitro group, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 represents a hydrogen atom, X2 is a fluorine atom, the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration,
- which comprises contacting a di-valent copper compound, in an inert organic solvent, with a chiral salicylideneaminoalcohol compound of formula (1):
- wherein R1, R2 X1, X2 and “*” respectively have the same meaning as defined above.
Dependencies are inferred from the claim text.