MHT CET 2026 Chemistry question

Identify the reagent used in Etard reaction

(A)Acetic anhydride
(B)Anhydrous aluminum chloride
(C)DIBAL - H
(D)Chromyl chlorideCorrect

Answer: (D)

Solution

In the Etard reaction, toluene is oxidised to benzaldehyde by chromyl chloride (CrOCl) in CS: the intermediate chromium complex is hydrolysed to give CHCHO. Acetic anhydride (with CrO) is used

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Question ID VK-097746