Copper complex

Details Copper complex Copper complex

1975-12-29

1977-06-14

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260429C, 260468H, C07F 108

Patent

active

040296830

ABSTRACT:
A copper complex coordinated with a Schiff base is provided herein, which complex is especially advantageous to catalyze the asymmetric synthesis of alkyl chrysanthemates. The specific complex of the present invention is a copper complex coordinated with a chiral Schiff base of the formula: ##STR1## wherein C* is an asymmetric carbon atom, R.sup.1 is selected from (a) alkyl groups whose carbon atom number is 1-10, and (b) aralkyl groups with or without alkoxy substituent(s), whose total carbon atom number is 7-20, R.sup.2 is selected from aryl groups with alkoxy substituent(s), whose total carbon atom number is 7-30, X is selected from (a) hydrogen, (b) alkyl groups having 1-10 carbon atoms, (c) a phenyl group, (d) alkoxy groups having 1-10 carbon atoms, (e) halogen atoms, (f) nitro, or X is benzo which together with the ring to which it is attached forms a naphthalene ring, and Y is a hydrogen atom.

REFERENCES:
patent: 2300998 (1942-11-01), White et al.
patent: 2381952 (1945-08-01), Guvelmann
patent: 3357883 (1967-12-01), Pillon et al.
patent: 3868401 (1975-02-01), Aratani et al.
Houghton et al., J. Chem. Soc. pp. 4214-4220 (1965).

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