Because of the quantitative yields and well-defined regio-and stereochemistry reported for group-transfer polymeri~ ation,~~~,~ we chose to approach the problem of regio-and stereoselectivity in reactions of silylpolyenolates with electrophiles by using the same anion catalysts.'" We studied the anion-catalyzed Reformatsky-type reactions of the known silyl ester dienolates 1 and 2 and the C-silyl analogue of 2 (4) with benzaldehyde. This paper ...
