The end product C is ethyl alcohol. CH3Br→KCNACH3−CN→H3O+BCH3−COOH→LiAlH4CCH3−CH2−OH Methyl bromide reacts with KCN to form acetonitrile. Br atom is replaced with CN group. Hydrolysis of cyano group gives carboxylic group. Reduction of carboxylic group gives hydroxyl group.
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