Optically active copper catalyst composition

Details Optically active copper catalyst composition Optically active copper catalyst composition

2007-08-07

2007-08-07

Puttlitz, Karl (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C564S287000

Reexamination Certificate

active

10549939

ABSTRACT:
There is provided an optically active copper catalyst composition comprising(a) an optically active salicylideneaminoalcohol represented by the formula (1):wherein R1and R2are the same or different, and independently represent a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group;X1and X2are the same or different, and independently represent a hydrogen atom, a lower alkoxy group, a nitro group, a lower alkoxycarbonyl group, a cyano group or a halogen atom; and * represents an asymmetric center, provided that both of X1and X2don't represent hydrogen atoms,(b) a monovalent or divalent copper compound, and(c-1) a lithium compound or(c-2) a compound selected from aluminum compounds having Lewis acidity, titanium compounds having Lewis acidity, boron compounds having Lewis acidity, zirconium compounds having Lewis acidity and hafnium compounds having Lewis acidity; and a process for producing an optically active cyclopropane compound by using the same.

REFERENCES:
patent: 6469198 (2002-10-01), Suzukamo et al.
patent: 2001/0037036 (2001-11-01), Suzukamo et al.
patent: 2002/0177718 (2002-11-01), Yamamoto et al.
patent: 2001-278851 (2001-10-01), None
patent: 2003-12675 (2003-01-01), None

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