Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1992-11-16
1995-03-07
Henley, III, Raymond J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
567402, 568735, 560 56, C07D22706
Patent
active
053959620
ABSTRACT:
The present invention provides three optical resolution methods. The first aspect comprises the steps of adding an optically active bifunctional resolving reagent to a bifunctional compound to form a liquid material, precipitating crystals therefrom, and treating the crystals and the liquid material separately with an acidic material, a basic material, or a basic material and an acidic material, to obtain a pair of enantiomers of an optically active bifunctional compound. The second aspect comprises an optical resolution method by which one necessary enantiomer of a pair of enantiomers in an optically active bifunctional compound is exclusively obtained. The third aspect comprises a method for racemizing one unnecessary enantiomer of a pair of enantiomers in an optically active bifunctional compound which is formed by the optical resolution method of the present invention.
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Henley III Raymond J.
Kankyo Kagaku Center Co., Ltd.
MacMillan Keith
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