Abstract
Formation of optically active α or γ-phenylcyclohexanone oximes ( 2a and 2b, c) and their esters ( 1a and 3b, c) by lipase mediated transesterification of the corresponding racemic esters is described. Furthermore, 2( S)-phenyl and 2,2-dimethyl-4( R)-phenylcyclohexanones ( 4 and 5) were prepared without any racemization by treatment with dimethyldioxirane in acetone or sodium hydrogen sulfite in refluxing aqueous ethanol.
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