Enolization of chiral α-silyloxy ketones with dicyclohexylchloroborane.: Application to stereoselective aldol reactions

[GRAPHICS] Comprehensive analysis of the enolization of alpha-silyloxyketones by Chx(2)BCl/R(3)N has allowed us to design stereoselective Chx(2)BCl-mediated aldol processes that afford syn or anti aldol products and to disclose a hypothesis that accounts for the subtle effects that determine their enolization.