Rates of photolysis of p-formylphenylacetic acid were measured flash photoytically in perchloric acid and sodium hydroxide solutions, and also in acetic acid, biphosphate ion, and tris-(hydroxymethyl) methaneammonium ion buffers, using H2O and D2O as solvents. The results provide rate profiles and solvent isotope effects, which indicate that photolysis occurs through an elongated enol intermediate. This enol is unusually strongly acidic, by ...
[Parkanyi, Cyril; Huang, Lois Shiow-Chyn Yeh; Chu, Sung Gun; Jeffries III, Alfred T. Collection of Czechoslovak Chemical Communications, 1996 , vol. 61, # 3 p. 342 - 354]