Which of the following reactions is Rosenmund reduction?

Which of the following reactions is Rosenmund reduction?

  2. $\mathrm{R}-\mathrm{CN} \underset{\mathrm{S}_2 \mathrm{O}}{\stackrel{\mathrm{SaCl}_2, \mathrm{HCl}}{\longrightarrow}} \mathrm{R}-\mathrm{CHO}+\mathrm{NH}_4 \mathrm{Cl}$
  3. $\mathrm{R}-\mathrm{CHO} \underset{\mathrm{Zn}-\mathrm{Hg}_3, \mathrm{Conc} \cdot \mathrm{HCl}}{\Delta} \mathrm{RCH}_3+\mathrm{H}_2 \mathrm{O}$

Solution

When benzoyl chloride reacts with $\mathrm{H}_2$ in the presence of $\mathrm{Pd}−\mathrm{BaSO}_4$, benzaldehyde will be formed. This reaction is known as Rosenmund's reaction.

Asked in: MHT CET 2023 (12 May Shift 1)

Practice more Alcohols Phenols and Ethers questions on Aicharya