抄録 Sonochemical hydroxylation of methyl< I> p-cyanobenzoate (< B> 1a) in water gave a bright blue fluorescence, which are mainly ascribed to three new fluorescent compounds, 3-hydroxy, 2, 3-and 2, 5-dihydroxy derivatives of< B> 1a. Other benzenes substituted with electron-withdrawing groups also gave similar fluorescence from their hydroxylated derivatives. Among the fluorescence substances, methyl 2, 5- ...