1-phenyl-2-(1-pyrrolidinyl)-1-propanol as a chiral catalyst for the highlyenantioselective addition of dialkylzincs to five-membered heterocyclic aldehydes

(1S,2R)- and (1R,2S)-1-phenyl-2-(1-pyrrolidinyl)-1-propanol catalyze the en antioselective addition of dialkylzincs to furaldehydes, thiophenecarbaldeh ydes, and 1-(p-tosyl)-2-pyrrolecarbaldehyde to afford the corresponding ena ntiomerically enriched sec-alcohols with up to 87% enantiomeric excess.