2-R-7-methyl [1, 2, 4] triazolo [2, 3-a] pyrimidines: synthesis and structures

…, AY Potapov, SE Nefedov, OE Sidorenko

文献索引：Shikhaliev; Krylski; Potapov; Nefedov; Sidorenko Russian Chemical Bulletin, 2008 , vol. 57, # 6 p. 1268 - 1272

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被引用次数: 6

摘要

Abstract Reactions of 5-R-3-amino-1, 2, 4-triazoles with ethoxymethylideneacetylacetone and ethyl ethoxymethylideneacetoacetate proceeded regioselectively, giving 2-R-7-methyl [1, 2, 4] triazolo [2, 3-a]-pyrimidines in good yields. The compounds obtained were characterized by elemental analysis, 1 H NMR spectroscopy, and X-ray diffraction analysis (for ethyl 2-ethylthio-7-methyl [1, 2, 4] triazolo [2, 3-a] pyrimidine-6-carboxylate). The ...