Processes for the separation of enantiomers by selective crystal

Details Processes for the separation of enantiomers by selective crystal Processes for the separation of enantiomers by selective crystal

1978-11-06

1980-10-28

Trousof, Natalie

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562401, 562402, 562505, C07D45304, C07B 1900

Patent

active

042308607

ABSTRACT:
Processes for separating racemic trans-1,2-cyclic dicarboxylic acids by dissolving the racemic acid and a resolving agent such as cinchonidine in a solvent and cooling the solvent to form crystals rich in d-trans-1,2-cyclobutane dicarboxylic acid, the d-trans acid being recovered for use in preparing optically active materials.

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patent: 3636093 (1972-01-01), Hoinowski et al.
patent: 3758559 (1973-09-01), Bollinger
patent: 3794655 (1974-02-01), Schubel et al.
patent: 3949000 (1976-04-01), Violet
patent: 3988365 (1976-10-01), Gallegra
patent: 4005088 (1977-01-01), Gubbels et al.
Goldsworthy, J. Chem. Soc., 125, 2012, (1924).
Coyner et al., J. Am. Chem. Soc., 71, 324, (1949).
Kagan, Pure and Applied Chem., 43, 401, (1976).

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