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Haloalkanes And Haloarenes

Question
CBSEENCH12007620

Give a convenient method of preparation of iodoalkanes.

Solution
Iodoalkane is conveniently prepared by the interaction of sodium iodide in acetone with a corresponding chloroalkane. It is also known as Finkelstein reaction.
stack straight R minus CH subscript 2 with Chloroalkane below minus Cl space plus space Nal space rightwards arrow with acetone on top stack space straight R minus CH subscript 2 minus straight I with Iodoalkane below space plus space NaCl