Question

The reaction is carried out by: 

• A. Diethyldimethyl mercaptol
• B. Propane
• C. 2-Methylbutan-2-ol
• D. Propan-2-thiol

Hint:

Hydrogenation with Ni in ethanol reduces the acyl group to a thiol group, often yielding thiol-containing compounds.

Answer 1

The Correct Option is D

This reaction proceeds as follows:

Step 1: Acid Chloride Formation.
2-pentanone is first converted to an acyl chloride using HCl and EISH, generating a reactive acyl chloride intermediate.

Step 2: Hydrogenation.
Subsequently, the acyl chloride is reduced by nickel (Ni) and ethanol (EtOH), resulting in the formation of a thiol group (–SH) in the final product.

Step 3: Conclusion.
Propane-2-thiol is the primary final product, aligning with option (4).

Final Answer: \[\boxed{\text{(4) Propan-2-thiol}}\]