抄録
Nuclear acylated compounds were prepared by heating catechol, resorcinol, resacylophenones, and their methyl ethers with acetic or propionic acid, in the presence of polyphosphoric acid, for 10-20 minutes in a boiling water bath. Catechol, guaiacol, and veratrole yielded acylocatechols, acylovanillones, and acyloveratrones, while resorcinol and its mono- and dimethyl ethers easily gave resacylophenones, their 4- and 2-methyl ethers, and dimethyl ethers in a good yield. Resacylophenones gave 4, 6-diacylresorcinols and resacylophenone 4-methyl ethers gave 4, 6-diacylresorcinol monomethyl ethers. However, nuclear acylation of resacylophenone 2-methyl ethers was difficult and resacylophenone dimethyl ethers failed to undergo nuclear acylation.
