Title:
ASYMMETRIC COPPER COMPLEX, ITS PRODUCTION AND PRODUCTION OF OPTICALLY ACTIVE CYCLOPROPANE CARBOXYLIC ACID COMPOUNDS USING THE COPPER COMPLEX
Document Type and Number:
Japanese Patent JP3482475
Kind Code:
B2
Abstract:
PURPOSE: To provide a novel complex useful as a catalyst for the production of optically active cyclopropane carboxylic acid compounds and obtained from easily available raw materials under mild conditions.
CONSTITUTION: The novel complex is produced by reacting an optically active ethylendiamine of formula I (R is H, lower alkyl; (m),(n) are 1-3; * is asymmetric carbon) with a copper compound. The complex is obtained by reacting the optically active ethylene-diamine [e.g. N, N'-bis(diphenylmethyl)-1,2- diphenylethylenediamine] with the copper compound [e.g. cupric (II) trifluoromethane sulfonate] usually in the presence of a solvent such as methylene chloride preferably at 0-35°C. The copper compound is used in an amount of 0.3-0.5 mole per mole of the compound of formula I. The compound of formula I is obtained e.g. by reacting optically active 1,2-diphenylethylene-diamine with a halide compound of formula II (X is halogen) in the presence of a base such as pyridine.
Inventors:
Shuji Kanemasa
Application Number:
JP22848392A
Publication Date:
December 22, 2003
Filing Date:
August 27, 1992
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B01J31/22; C07B53/00; C07B61/00; C07C51/09; C07C61/04; C07C211/27; C07F1/08; (IPC1-7): C07F1/08; B01J31/22; C07B53/00; C07C51/09; C07C61/04; C07C211/27
Other References:
【文献】日本化学会第63春季年会1992,第1553頁,講演番号2E246
Attorney, Agent or Firm:
Takashi Kuboyama (2 outside)
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