Asymmetric Induction by (S)-4-Isopropyl-1-phenylimidazolidin-2-thione in Titanium-Mediated Aldol Reactions and Its Application in Enantioselective Synthesis of (R)-Baclofen
usefulness of (S)-4-isopropyl-1-phenylimidazolidin-2-thione as a chiral auxiliary in stereoselective propionate and acetate aldol reactions is discussed. Further, the enantioselective synthesis of (R)-baclofen by acetate aldol reactionusing the chiral auxiliary was demonstrated. titanium - aldol reaction - asymmetricsynthesis - chiral auxiliaries - stereoselectivity