Abstract
Polyphosphoric acid reaction of phenol and dihydric phenols with benzoic, salicylic, p-hydroxybenzoic, or anisic acid resulted in the formation of pyrocatechol monobenzoate or monoanisoate, phloroglucinol tribenzoate, phenyl salicylate, hydroquinone disalicylate or dianisoate, or resorcinol dianisoate. The cold reaction of phenol with p-hydroxybenzoic, anisic, or benzoic acid gave 4-hydroxyacylophenones. Polyphosphoric acid reaction of phenyl anisoate resulted in its facile change to nuclear anisoylated compound. The condensation of phenol and benzoic acid and rearrangement of phenyl benzoate to 4-hydroxybenzophenone were practically impossible.
