Question

Which one of the following pairs is not correctly matched?

• A. \( > \text{C} = \text{O} \to \text{CH}_2 \) (Clemmensen reduction)
• B. \( > \text{C} = \text{O} \to \text{CHOH} \) (Wolf-Kishner reduction)
• C. \( > \text{COCl} \to \text{CHO} \) (Rosenmund reduction)
• D. \( > \text{C} = \text{N} \to \text{CHO} \) (Stephen reduction)

Hint:

In the Wolf-Kishner reduction, a carbonyl group is reduced to a methylene group, not a hydroxymethyl group.

Answer 1

The Correct Option is B

Step 1: Correct reaction mechanisms.
- The Clemmensen reduction involves the reduction of a carbonyl group to a methylene group \( \text{CH}_2 \).
- The Wolf-Kishner reduction reduces a carbonyl group to a methylene group (not \( \text{CHOH} \)).
Thus, option (2) is incorrectly matched.
Thus, the correct answer is (2).