CATALYSIS OF THE ADDITION OF ALLYLTRIMETHYLSILANE TO ALDEHYDES BY SILYLATING AGENTS - ME3SIB(OTF)4, A NEW, SUPERSILYLATING REAGENT

An unusually good source of electrophilic silyl groups, Me3SiB(OTf)4 (Tf = CF3SO2), can be prepared by the addition of Me3SiOTf to B(OTf)3. This compound catalyzes the efficient allylation of aldehydes as outlined in Equation (a) and is four orders of magnitude more reactive than Me3SiOTf. Further applications for this new rea-ent will certainly emerge.(~)[GRAPHICS]