Question

In a reaction $\text{R}\text{C}\text{H}\text{O}$ is reduced to $\text{R}\text{C}{\text{H}}_3$ using amalgamated zinc and concentrated $\text{H}\text{Cl}$ and warmtextng the solution. The reaction is known as

• A. Meerwein-Ponndorf reaction
• B. Clemmensen's reduction
• C. Wolff-Kishner reduction
• D. Schiff's reaction

Answer 1

Answer: (B)

In Clemmensen's reduction, aldehyde ( $\text{R}\text{C}\text{H}\text{O}$ ) and ketones ( $\text{R}-\text{C}\text{O}-\text{R}\text{′}$ ) are reduced into hydrocarbons ( $\text{R}-\text{R}$ ').
$\text{R}\text{C}\text{H}\text{O}+6\left[\text{H}\right]\underset{\text{C}\text{o}\text{n}\text{c}.\text{H}\text{C}\text{l}}{\stackrel{\text{Z}\text{n}\text{a}\text{m}\text{a}\text{l}\text{g}\text{a}\text{m}\text{a}\text{t}\text{e}\text{d}}{\to }}\text{R}\text{C}{\text{H}}_3+2{\text{H}}_2\text{O}$