M. Galobardes et al., Enolization of chiral alpha-silyloxy ketones with dicyclohexylchloroborane. Application to stereoselective aldol reactions, ORG LETT, 2(17), 2000, pp. 2599-2602
[GRAPHICS]
Comprehensive analysis of the enolization of alpha-silyloxyketones by Chx(2
)BCl/R3N has allowed us to design stereoselective Chx(2)BCl-mediated aldol
processes that afford syn or anti aldol products and to disclose a hypothes
is that accounts for the subtle effects that determine their enolization.