Question

The following reaction $R - Cl + NaI {->[{\text{Acetone}}]} R - I + NaCl$ is known as

• A. Frankland reaction
• B. Swarts reaction
• C. Etard reaction
• D. Finkelstein reaction

Answer 1

Answer: (D)

Finkelstein reaction

Answer 2

$R -X + NaI {->[\text{Acetone}]} R - I +NaX$ ,br>
where $X = Cl, Br$
Alkyl iodides are often prepared by alkyl chlorides/bromides by heating with $NaI$ in dry
acetone. This reaction is known as Finkelstein reaction. $NaCl$ or $NaBr$ thus formed is precipitated in dry acetone.