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Communication | Regular issue | Vol 24, No. 1, 1986, pp.33-36
Published online, 1st January, 1970
DOI: 10.3987/R-1986-01-0033
Oxidation of 2,5-Dihydro-1,2,3-triazines by m-Chloroperbenzoic Acid

Takashi Itoh, Akio Ohsawa, Terumitsu Kaihoh, and Hiroshi Igeta*

*School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan


2,5-Dihydro-1,2,3-triazines were oxidized by m-chloroperbenzoic acid to give only 1,2,3-triazine 2-oxides, while the oxidation of 1,2,3-triazines yielded the mixtures of 1- and 2-oxides. In case of adopting 2-methyl-2,5-dihydro-1,2,3-triazines as starting materials, 2-methyltriazoles and 2,5-dihydro-5-oxo-1,2,3-triazines were obtained.