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Answer: (Cumene process)

Step 1: Isopropyl benzene (cumene) is oxidised by air at about 400 K (in presence of a little alkali) to cumene hydroperoxide:
C6H5–CH(CH3)2 + O2 → C6H5–C(CH3)2–O–OH

Step 2: Cumene hydroperoxide is warmed with dilute acid (H3O+), which rearranges and hydrolyses it to phenol and acetone:
C6H5–C(CH3)2–O–OH —(H3O+)→ C6H5OH + CH3COCH3

Acetone is obtained as a valuable by-product.

Doubtly AI · 28 Oct 2026 AI-verified · Oct 2026 Report
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