Question

The reagent for Etard's reaction is:

• A. CH\(_3\)COCl
• B. AlCl\(_3\)
• C. CrO\(_3\)
• D. NaOCl

Hint:

In Etard’s reaction, the presence of AlCl\(_3\) or another Lewis acid is essential to catalyze the formation of the aldehyde when using acylating agents like acetyl chloride.

Answer 1

The Correct Option is A

Etard's reaction is a reaction in which aromatic aldehydes are formed by the reaction of aromatic compounds with acylating agents in the presence of a Lewis acid catalyst. - CH\(_3\)COCl (acetyl chloride) is the reagent used in Etard's reaction to form an aldehyde group in the aromatic ring. - AlCl\(_3\) is a catalyst but does not directly serve as a reagent in Etard's reaction. - CrO\(_3\) is an oxidizing agent and is not typically used in Etard’s reaction. - NaOCl is sodium hypochlorite, which is not a reagent in Etard’s reaction. Thus, CH\(_3\)COCl is the reagent used in Etard's reaction.