Highly stereocontrolled reduction of an alkynyl ketone possessing a 1,3-dithianyl moiety using oxazaborolidine–BH3

Abstract
Highly enantioselective reduction of 2-benzyl-2-propioloyl-1,3-dithiane was conducted using oxazaborolidine derived from L-threonine and borane complex to give (S)-2-benzyl-2-(1-hydroxyprop-2-ynyl)-1,3-dithiane in high enantiomeric purity.

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