four naphthols (1-naphthol (1), 2-naphthol (2), 4-isopropyl-1-naphthol (18), and 3-isopropyl-2-naphthol (19)) with benzoylperoxide were examined under two reaction conditions (A and B). Each of the naphthols 1, 2, 18, and 19 was oxidized with 0.95 equivalent moles of benzoylperoxide at room temperature for 24 h (condition A) to give mainly the corresponding ortho-benzoyloxylated product which was