Asymmetric reduction of N-substituted ketimines with the reagent prepared from borane and (S)-(–)-2-amino-3-methyl-1,1-diphenylbutan-1-ol (itsuno's reagent): enantioselective synthesis of optically active secondary amines
Abstract
Itsuno's Reagent (1) reduced N-substituted ketimines in very high yields to the corresponding amines with high optical induction.