Answer :
Final answer:
The reaction of a Grignard reagent with a nitrile, followed by acid hydrolysis, produces a ketone, with the process involving the initial formation of an imine salt.
Explanation:
The reaction of a Grignard reagent with a nitrile, such as acetonitrile, followed by acid hydrolysis, typically yields a ketone. Initially, the Grignard reagent attacks the electrophilic carbon atom in the nitrile, resulting in the formation of an imine salt. Subsequent treatment with an acid, often a mild acid like ammonium chloride (NH4Cl), leads to the hydrolysis of the imine salt to produce the desired ketone. For example, when methyl magnesium iodide (CH3MgI) reacts with acetonitrile, after hydrolysis the product is acetone (CH3COCH3).