13.18 Give the structures of A, B and C in the following reactions:

<p><strong> (i)</strong> Ethyl iodide reacts with NaCN gives a substitution reactions to give propanitrile upon partial hydrolysis gives B, upon reaction with sodium hydroxide gives C.</p><p>&nbsp;</p><p><strong> (ii)</strong> Benzenediazoniumchloride gives nucleophilic substitution reactions gives A, upon hydrolysis the CN ion is replaced by OH ion which is less better leaving group gives B upon heating with ammonia gives C.</p><p>&nbsp;</p><p><strong> (iii)</strong> Ethylbromide gives nucleophilic substitution reactions gives B, upon reduction gives B followed by reacting with nitrous acid, i.e oxidation gives propanol.</p><p>&nbsp;</p><p><strong> (iv)</strong> Nitrobenzene upon reduction with iron/acid gives A, reacting with sodium nitrite gives benzenediazonium chloride, followed by complete Hydrolysis gives phenol.</p><p>&nbsp;</p><p><strong> (v)</strong> Acetic acid upon heating with ammmonia gives A, which is an amide. This amide reacts with NaOBr which extracts the carbonyl carbon giving B, followed by reacting with sodium nitrite gives methanol.</p><p>&nbsp;</p><p><strong> (vi)</strong> Nitrobenzene upon reduction with iron/acid mixture gives A, followed by oxidation with nitrous acid gives B and reacting with phenol undergoes addition reaction to give C.</p>

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