Question

ln which of the following reactions, both oxidised and reduced forms of the same compound are obtained?

Options

• Aldol condensation 

• Cannizzaro's reaction

• Riemer-Tiemann reaction

• Kolbe's synthesis

Answer 1

Cannizzaro's reaction

Explanation:

The oxidised and reduced versions of the same aldehyde are generated in Cannizzaro's reaction. It's a reaction of disproportionation.

\[\begin{array}{cc}
\ce{O}\phantom{.................................................................}\\
||\phantom{.................................................................}\\
\ce{\underset{Formaldehyde (No α-H atom)}{2H - C - H} + \underset{{(50%)}}{NaOH} -> \underset{Methyl alcohol (reduced product)}{CH3 - OH} + \underset{Sodium formate (oxidised product)}{HCOONa}}
\end{array}\]