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2004
Thiazine derivatives
R 0610
Synthesis and Transformations of 2-R-5-Aryl-5,6-dihydro-7H-[1,2,4]-triazolo
— A new procedure for the synthesis of the title triazolo44- 185 -[5,1-b]-[1,3]thiazin-7-ones.
thiazine and related derivatives [cf. (III), (X) and (XII)], which are interesting as potential physiologically active compounds, by condensation of triazolethiones (I) with
appropriate acryloyl chlorides is developed. The CO-N bond of the thiazine ring in condensation products (III) is easily cleaved by treating with ammonia or hydrazine. Hydrazide (V) thus obtained is converted into bistriazole derivative (VIII). —
(BRITSUN, V. N.; ESIPENKO, A. N.; KUDRYAVTSEV, A. A.; LOZINSKII, M. O.;
Russ. J. Org. Chem. 40 (2004) 2, 232-238; Inst. Org. Chem., Acad. Sci. Ukr., Kiev
253094, Ukraine; Eng.) — D. Singer
2004
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