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JEE Main levelSingle correct optionDifficulty 2 of 3co002

Propanenitrile is treated with an ether solution of methylmagnesium bromide and then with dilute aqueous acid. The major organic product is

Apropan-2-ol
Bbutan-2-one
Cpentan-2-one
Dbutan-2-ol

Answer: B

CH X_{3} X^{-}

adds to the nitrile carbon to give an imine salt

CH X_{3} CH X_{2} C (CH X_{3}) = NMgBr

. Hydrolysis converts

C = N

into

C = O

, giving

CH X_{3} CH X_{2} COCH X_{3}

.

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