Each of the following reactions has been reported in the chemical literature and gives a single organic product in high yield. Identify the product in each case.
(a) 3-Benzyl-2, 6-dimethylphenol treated with bromine in chloroform
(b) 4-Bromo-2-methylphenol treated with 2-methylpropene and sulfuric acid
(c) 2-Isopropyl-5-methylphenol (thymol) treated with sodium nitrite and dilute hydrochloric acid
(d) p-Cresol treated with propanoyl chloride and aluminum chloride