... CARBANIONS WITH ELECFROPHILES P.WK. LAU and TH. CHAN* Department of Chemistry, McGill University, Montreal, Quebec (Canada) (Received February 27th, 1979) Summary Regioselection in the reaction of a-silyloxyallyl carbanion with electrophiles has been found to change with the nature of leaving groups in the electrophiles. a-Silyloxyallyl carbanions (Ia) have ...