Etudes photochimiques en série hétérocyclique. V. Mise en évidence d'oxazoles par photooxydation de thiazoles

G Vernin, S Treppendahl, J Metzger

Index: Vernin,G. et al. Helvetica Chimica Acta, 1977 , vol. 60, p. 284 - 297

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Citation Number: 6

Abstract

Summary In the presence of air, light (high pressure mercury lamp) and iodine as sensitizer, benzene solution of arylthiazoles 2, 3 and 13 (see scheme I) were converted into a mixture of photoisomers and aryloxazoles (see scheme 2). Upon shorter times of irradiation under oxygen in chloroform containing methylene blue as a sensitizer 2, 4, 5-triphenylthiazole (7) is converted in 2, 4, 5-triphenyloxazole.