The best method for the preparation of Me_{3} | vedclass

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(C) The preparation of $Me_{3}CCN$ (pivalonitrile) from $Me_{3}CBr$ via $S_{N}2$ reaction with $NaCN$ is not feasible because $Me_{3}CBr$ is a tertiar

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to react $Me_{3}CMgBr$ with $ClCN$

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(C) The preparation of $Me_{3}CCN$ (pivalonitrile) from $Me_{3}CBr$ via $S_{N}2$ reaction with $NaCN$ is not feasible because $Me_{3}CBr$ is a tertiary alkyl halide, which undergoes elimination rather than substitution.The reaction of $Me_{3}CMgBr$ (a Grignard reagent) with $ClCN$ (cyanogen chloride) is the most effective method for introducing a cyano group to a tertiary carbon atom.The reaction is as follows:$Me_{3}CMgBr + ClCN \rightarrow Me_{3}CCN + Mg(Cl)Br$

The best method for the preparation of $Me_{3}CCN$ is

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