Preparation of phenol from cumene \\\\(\\rightarrow\\\\)To prepare phenol, cumene is first oxidised in the presence of air to cumene hydroperoxide.\\\\(\\underset{\\left( \ ext{Isoprophyl benzene} \\right)}{\ ext{Cumene}} \\xrightarrow[]{{O}_{2}} \ ext{Cumene hydroperoxide}\\\\)Now, cumene hydroperoxide is treated with dilute acid to prepare phenol and acetone as by-products.\\\\(\ ext{Cumene hydroperoxide} \\xrightarrow[323-363 \\; K]{{H}^{+}} \ ext{Phenol} + \ ext{Acetone}\\\\)By this method, acetone is obtained in large quantities.