Process for preparing optically active cyanohydrins with enzymes

Details Process for preparing optically active cyanohydrins with enzymes Process for preparing optically active cyanohydrins with enzymes

1991-12-17

1993-01-05

Brust, Joseph P.

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

Organic compounds

Nitriles

435128, C07C25316, C07C25330

Patent

active

051772426

ABSTRACT:
The reaction time and ease of handling of reactants in the known process of forming optically active (S)-cyanohydrins by reacting aldehydes with hydrocyanic acid in the presence of the enzyme S-oxynitrilase and a solvent may be significantly improved over the known methods when the solution of aldehydes and acid is passed through a porous membrane comprising a polymeric resinous binder having finely divided filler particles dispersed throughout the binder to which the S-oxynitrilase enzyme has been chemically bound.

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patent: 4169014 (1979-09-01), Goldberg
patent: 4859784 (1989-08-01), Effenberger et al.
patent: 4900667 (1990-02-01), Arena
patent: 4959467 (1990-09-01), Arena
patent: 5008192 (1991-04-01), Neidermeyer et al.
patent: 5122462 (1992-06-01), Miethe et al.
"A Novel Immobilized Enzyme Reactor System" Goldberg, AICHE Symposium (May 10, 1984).
"Continuous (R)-mandelic acid production in an enzyme membrane reactor", Vasic-Racki et al., Appl. Microbial Biotechnol., 31, pp. 215-222 (1989).
"Engineering Aspects of Enzyme Engineering" Kragl, et al., Annals New York Academy of Sciences, pp. 167-175 (1990).

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