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Preparation of Carboxylic Acids

Acetonitrile ...

Question

Acetonitrile on reaction with $C_{2} H_{5} M g B r$ , followed by hydrolysis, gives compound $A$ , which on further hydrolysis gives $B$ and $C$ . $B$ and $C$ are:

{N H}_{3}

and

E t C O - C H_{3}

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E t {N H}_{2}

and

M e C H O

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M e {N H}_{2}

and

E t C O O H

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E t {N H}_{2}

and

M e C O O H

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Solution

The correct option is A ${N H}_{3}$ and $E t C O - C H_{3}$
Nitriles react with grignard reagent to form ketones.
$C H_{3} C \equiv N + C_{2} H_{5} M g B r \to C H_{3} C (N M g X) C_{2} H_{5} a c i d - ----- \to h y d r o l y s i s C H_{3} C (O) C_{2} H_{5} + N H_{3} + M g s a l t$

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