Synthesis and spectral and luminescent properties of 4-(5-aryloxazoyl-2)benzoic acids and their derivatives

Condensation of acid chloride of monomethyl terephtalate with -aminomethyl-arylketones and subsequent cyclodehydration of the resulting amides in sulfuric acid or phosphorus oxychloride give rise to methyl 4-(5-aryloxazolyl-2)benzoates which led to the corresponding acids, acid chlorides, and amides. The effect of electron-withdrawing groups on the spectral and luminescent properties, as well as on the stability of substituted 2,5-diaryloxazoles toward UV irradiation has been investigated.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1261–1264, September, 1986.