Synthesis of dendrimer-supported ferrocenylmethyl aziridino alcohol ligands and their application in asymmetric catalysis

Abstract

A series of N-ferrocenylmethyl aziridino alcohol ligands bearing Fréchet-type dendrimers were synthesized and applied in the asymmetric addition of diethylzinc to aldehydes affording chiral alcohols in excellent yields (up to 99%) and excellent enantioselectivities (ee, up to 98%). The ligands could be recycled and reused eight times for such a reaction with almost the original high reactivity and selectivity.