Alkyl iodides can be best prepared by

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(B) The $Finkelstein$ reaction is a classic method for the preparation of alkyl iodides from alkyl chlorides or alkyl bromides. In this reaction,an al

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Finkelstein reaction

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(B) The $Finkelstein$ reaction is a classic method for the preparation of alkyl iodides from alkyl chlorides or alkyl bromides. In this reaction,an alkyl halide ($R-X$,where $X = Cl, Br$) is treated with sodium iodide $(NaI)$ in dry acetone. The reaction proceeds as follows: $R-X + NaI \xrightarrow{	ext{dry acetone}} R-I + NaX$. Since $NaCl$ or $NaBr$ is less soluble in dry acetone than $NaI$,the precipitation of the salt drives the reaction forward according to $Le$ $Chatelier's$ principle.

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