Chiral cyanohydrination process

Details Chiral cyanohydrination process Chiral cyanohydrination process

C - Chemistry, Metallurgy

07

B

260/559.2

C07B 53/00 (2006.01) B01J 31/02 (2006.01) C07D 307/54 (2006.01) C07D 309/32 (2006.01) C07D 333/24 (2006.01) C07D 333/60 (2006.01)

Patent

CA 1266487

Abstract of the Disclosure Chiral aromatic cyanohydrins are prepared by treating an aromatic aldehyde with cyanide ions in the presence of an inert, aprotic solvent and a chiral cyclo(phenylalanyl-histidine) and an alcohol. The technique is especially useful for reducing the induction period when starting-up the process, increasing the rate of reaction and producing a product of increased enantiomeric selectivity. The chiral aromatic cyanohydrin products include those of formula: Image wherein R is as defined in the disclosure.

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