Question

Select the reagent(s), used for conversion of

• A. Zn-Hg/HCl
• B. (i) N$_{2}$H$_{4}$, (ii) KOH/ethylene glycol, $\Delta$
• C. Cl, anhy. AlCl$_{3}$
• D. (i) HS SH / H$^{+}$, (ii) Raney-Ni

Answer 1

Answer: (A), (B), (D)

A, B, and D

Answer 2

Clemmensen reduction (A), Wolff-Kishner reduction (B), and reductive desulfurization of thioketals (D) are all established methods for converting carbonyl groups (C=O) of ketones into methylene groups (CH$_2$). Option (C) involves reagents for Friedel-Crafts acylation, which is not applicable to this conversion.