L. Labanauskas, V. Bucinskaite, D. Bucyte
Nov 30, 2004
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Journal
Chemistry of Heterocyclic Compounds
Abstract
During a study of triazoles and related condensed heterocycles [1], we synthesized 7-methyl-3methylthio-7,8-dihydro[1,2,4]triazolo[3,4-f][1,2,4]triazine (5), which is a previously unknown heterocyclic system. The amino alcohol 2 obtained by methylation of thione 1 is converted to the chlorinated derivative 3, and then to the methylamino derivative 4. Compound 5 is obtained by condensation of the latter with ethyl orthoformate. In its IR spectrum, there were no vibrational bands for the amino groups, but in the H NMR spectrum we observed a signal from the methine proton at 7.11 ppm.