Diphenyl Ether誘導体に於けるFriedel-Crafts反応 (第5報)

抄録

Friedel-Crafts reaction of 2-methoxydiphenyl ether and 2-methoxy-4′-methyldiphenyl ether with acetyl chloride was carried out from which it was found that the acetyl group preferentially attacked the para position of the methoxyl group in both compounds. In the reaction of 2, 3-dimethoxy-4′-methyldiphenyl ether and acetyl chloride, structurally unkown crystals of m.p. 183° were obtained besides 2-methoxy-3-hydroxy-4-acetyl-4′-methyldiphenyl ether, m.p. 107-109°. The crystals were not identical with those of either 2, 3-dimethoxy-5-acetyl-or 2, 3-dimethoxy-6-acetyl-4′-methyldiphenyl ether prepared separately.