Trialkylsilyl(dialkyl)zincate reagents, PhMe 2 SiZnR 2 Li, (R = Alkyl), are easily prepared in THF solutions via the addition of two equivalents of methyllithium and one equivalent of dimethylphenylsilyllithium to zinc halides (ZnI 2 or ZnCl 2 ). The resulting zincate reagents undergo conjugate additions to a variety of α,β-unsaturated enone substrates. A single silylzincate species is observed by low temperature 2 9 Si NMR of a THF solution. These reagents afford high yields of silylated products and offer a safer route to these adducts than do trialkylsily(dialkyl)zincate reagents prepared via the addition of dimethylphenylsilyllithium to extremely pyrophoric dialkylzinc reagents. This method has been extended to the conjugate addition of trialkylsilyl(diamido)zincate reagents to enone substrates.