The conversion of ethyl bromide using sodium iodide and dry acetone, this reaction is known as

Options

A. Swarts reaction
B. Finkelstein reaction
C. Sandmeyer reaction
D. Stephen reaction

Answer

B

Explanation

Alkyl iodides and fluorides are prepared by the `S_(N)2` mechanism. Alkyl chlorides or bromides reacts with `Nal` in dry acetone to given alkyl iodine. This reaction is know as Finkelstein reaction.
`R-X + Nal rarr Rl + NaX [X = Cl, Br]`
e.g., `C_(2)H_(5)Br + Nal rarr C_(2)H_(5)l + NaBr`