Question

In the Etard reaction, the final product is

• A. Aromatic aldehyde
• B. Aromatic chloride
• C. Aromatic amine
• D. Aromatic alcohol

Answer 1

The Correct Option is A

The Etard reaction is an organic chemical transformation that converts aromatic hydrocarbons, specifically aromatic methyl groups, into aromatic aldehydes. This process entails oxidizing the methyl group attached to the aromatic ring using chromyl chloride (CrO₂Cl₂) in a solvent like carbon tetrachloride (CCl₄).

The Etard reaction proceeds in these main stages:

1. Reaction of the aromatic hydrocarbon with chromyl chloride to yield a complex.
2. Hydrolysis of this complex results in the formation of an aromatic aldehyde.

The importance of this reaction lies in its ability to directly oxidize a side-chain methyl group on an aromatic ring to an aldehyde, preventing further oxidation to a carboxylic acid. Consequently, the Etard reaction yields aromatic aldehydes as its final product.

Thus, the product is: Aromatic aldehyde