Functionalized Triarylcarbenium Ions as Catalysts in Mukaiyama Aldol Addition: Effects of Counter Ions and Silyl Groups on the Intervention of Silyl Catalysis

All articles of this category Stereochemical studies have indicated that functionalized Tr + SbCl 6 - may serve as efficient aldol reaction catalysts by judicious choice of a silyl component. The aldol addition between TMS ketene acetal derived from γ -butyrolactone and benzaldehyde provided the silyl aldolates with high syn diastereoselectivities. Meerwein salts - ionization - trityl ions - diastereoselective - β -hydroxylactones