Best design of heterogenized β-aminoalcohols for improvement of enantioselective addition of diethylzinc to benzaldehyde
Abstract
Covalent immobilization of
(1R,2S)-(−)-ephedrine, used as a model molecule of
β-aminoalcohols, on the surface of MCM-41-type mesoporous
aluminosilicates, performed by a new sol–gel method, leads to chiral
auxiliaries which show greatly enhanced rates and ee’s compared to
those reported up to now in the enantioselective addition of