Catalytic Enantioselective Reactions. Part 12. Enantioselective Addition of Diethylzinc to Aldehydes Catalyzed by Zinc Complexes Modified with Chiral β-Sulfonamidoalcohols

Abstract Various new chiral P-sulfonamidoalcohols were prepared. The zinc complexes modified by these chiral ligands alone without the use of titanium tetraisopropoxide are effective as chiral catalysts for the addition of diethylzinc to aldehydes to afford secondary alcohols with moderate enantioselectivity.