Consider the following reaction, Phenol Zn dust X Anhydrous AlCl ₃ CH ₃ Cl Y array l Alkaline KMnO array Z , the product, Z , is

Step-by-step solution

Key Idea (i) Z n dust converts - OH group into- H . (ii) Reaction with CH ₃ Cl in presence of anthy. AlCl ₃ is called Friedel-Craft's alkylation. (iii) Alkaline KMnO ₄ converts complete carbon chain which is directly attached with benzene ring, into - COOH group.