question_answer

The above reaction is:

A)  Clemmensen reduction

B)  Rosenmund reduction

C)  Birch reduction

D)  Wolff-Kishner reduction

Correct Answer: B

Solution :

The catalytic hydrogenation of acid chloride to yield aldehyde is called Rosenmund reduction. \[\underset{Benzoyl\,chloride}{\mathop{{{C}_{6}}{{H}_{5}}COCl}}\,+{{H}_{2}}\xrightarrow{Pd/BaS{{O}_{4}}}\underset{Bezaldehyde}{\mathop{{{C}_{6}}{{H}_{5}}CHO}}\,\]                                                \[+HCl\] Clenunensen reduction: It involves reduction of carbonyl group in presence of \[Zn/Hg/conc\]. \[HCl\] to form alkane Wolff-Kishner reduction: Birch reduction: \[\underset{Alkene}{\mathop{R-CH=C{{H}_{2}}}}\,\xrightarrow[[H]]{Na/N{{H}_{3}}}\underset{Alkene}{\mathop{R-C{{H}_{2}}C{{H}_{3}}}}\,\]