縮合剤としてのポリ燐酸の応用に関する研究 (第8報)

置換安息香酸による石炭酸のアシル化

抄録

Fifteen kinds of mono-substituted benzoic acid possessing OCH₃, OH, CH₃, Cl, or NO₂ in the ortho-, meta-, or para-position of the carboxyl were reacted respectively with phenol, in the presence of polyphosphoric acid. It was thereby found that the nuclear substitution became difficult in the order of OCH₃, OH, CH₃, H, Cl, and NO₂, and the influence of substituents on the nuclear substitution appeared more clearly in the ortho- and para-substituted acids. Nitrobenzoic acids were most resistant to substitution.