Carboxylic Acids and their Derivatives 2 Question 47
47. In the following identify the compounds/reaction conditions represented by the alphabets $A, B$, and $C$ :
$$ \begin{aligned} & \mathrm{C}{6} \mathrm{H}{5} \mathrm{COOH} \xrightarrow{\mathrm{PCl}{5}} A \xrightarrow{\mathrm{NH}{3}} \ & B \xrightarrow{\mathrm{P}{2} \mathrm{O}{5}} \mathrm{C}{6} \mathrm{H}{5} \mathrm{CN} \xrightarrow{\mathrm{H}_{2} / \mathrm{Ni}} C \end{aligned} $$
$(1991,2 M)$
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Solution:
- $\mathrm{C}{6} \mathrm{H}{5} \mathrm{COOH} \xrightarrow{\mathrm{PCl}{5}} \mathrm{C}{6} \mathrm{H}{5} \mathrm{COCl} \xrightarrow{\mathrm{NH}{3}} \mathrm{C}{6} \mathrm{H}{5}-\underset{B}{\stackrel{|}{\mathrm{C}}-\mathrm{NH}_{2}}$
$$ \xrightarrow{\mathrm{P}{2} \mathrm{O}{5}} \mathrm{C}{6} \mathrm{H}{5}-\mathrm{CN} \xrightarrow{\mathrm{H}{2} / \mathrm{Ni}} \mathrm{C}{6} \mathrm{H}{5} \mathrm{CH}{2} \mathrm{NH}_{2} $$
