6-Methoxy-2-acyl naphthalene and 2-methoxy naphthalene waschlorinated with cupric chloride in different solvents. For 6-methoxy-2-propionylnaphthalene in methanol and ethanol, 6-methoxy-2-(2′-chloropropionyl) naphthalene was obtained in yield of 90%～98.4%. For 2-methoxy naphthalene in chlorobenzene, 1-chloro-2-methoxy naphthalene was obtained in yield of 97.5%.
