Question

Consider the given sequence of reactions

The compound \(D\) cannot be obtained by

• A. Etard reaction
• B. Friedel--Crafts reaction
• C. Rosenmund reaction
• D. Gattermann--Koch reaction

Hint:

Important methods for preparing benzaldehyde: \[ \boxed{ \begin{aligned} &\text{Etard reaction} &\text{Rosenmund reduction} &\text{Gattermann--Koch formylation} \end{aligned} } \] Friedel--Crafts reaction does not directly give benzaldehyde.

Answer 1

The Correct Option is B