Enzymatic process for the preparation of (S)-cyanohydrins

摘要

Process for the preparation of the (S)-enantiomers of optically active cyanohydrins, in which a reaction mixture ofa) an aldehyde or ketone dissolved in an organic, water-immiscible or slightly miscible diluent,b) an aqueous (S)-hydroxynitrile lyase solution andc) a cyanide group donoris stirred in such a way that an emulsion is formed which is maintained up to the end of the reaction by stirring.