Question

Which of the following is Clemmensen reduction?

• A. Reduction of aldehydes/ketones to alkanes using zinc amalgam and HCl
• B. Oxidation of alcohols to aldehydes/ketones
• C. Reduction of nitro compounds to amines using Sn and HCl
• D. Reduction of carboxylic acids to aldehydes using LiAlH\(_4\)

Hint:

Clemmensen reduction is commonly used for the reduction of aldehydes and ketones that are not sensitive to acidic conditions.