New synthesis of allylsilanes and vinylsilanes by means of PhMe2Si-AlEt2

The reaction of allylic phosphates with the title organoaluminium reagent (PhMe2Si-AlEt2) provides allylsilanes in good yields. Cross coupling of enol phosphates with PhMe2Si-Mtl (Mtl = AlEt2 or MgMe) produces vinylsilanes regio- and stereoselectively in the presence of Pd(0) catalysts.