Magnesium–bromine exchange to provide the 1-bromo-1-silylmethylmagnesium species is mediated by treatment of dibromomethylsilane with an trialkylmagnesate reagent. The addition of a copper catalyst induces facile migration of an alkyl group to afford an α-silylalkylmagnesium compound, which furnishes α-silyl ketones in good yield upon treatment with acyl chloride (see scheme).
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Kondo et al. (2001) studied this question.
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