Question

Product of the following reaction is:

• A.
• B.
• C.
• D.

Hint:

The partial reduction of a nitrile (\(-CN\)) using SnCl\textsubscript{2}/HCl gives an imine intermediate that hydrolyzes to form an aldehyde (\(-CHO\)). This is an important method for synthesizing aldehydes from nitriles.

Answer 1

The Correct Option is B

Step 1: Understanding the Reaction Mechanism
The given reaction involves the reduction of a nitrile (\(-CN\)) group using stannous chloride (\(\text{SnCl}_2\)) and hydrochloric acid (\(\text{HCl}\)). This reaction follows a two-step mechanism: % Option (A) The nitrile (\(-CN\)) is first reduced to an imine intermediate (\(-C=NH\)) in the presence of SnCl\textsubscript{2} and HCl. % Option (B) Acidic hydrolysis (\(\text{H}_3\text{O}^+\)) of the imine intermediate leads to the formation of an aldehyde (\(-CHO\)).
Step 2: Identifying the Final Product
The final product obtained after hydrolysis is benzaldehyde (\(-CHO\)).
Step 3: Matching with the Given Options
The correct answer is benzaldehyde (\(\text{CHO}\)), which corresponds to option (B). Final Answer: The product of the reaction is benzaldehyde (\(\text{CHO}\)).