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Transformation of 2,4,6-triarylverdazyls into 1,2,4-triazole derivatives by the action of bromocyanomethanes

โœ Scribed by E. I. Tomilenko; A. M. Nesterenko; V. N. Kalinin; V. I. Staninets


Book ID
104782022
Publisher
Springer US
Year
1987
Tongue
English
Weight
347 KB
Volume
23
Category
Article
ISSN
0009-3122

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Conversion of 4,6-disubstituted pyrimidi
โœ H. C. van der Plas; H. Jongejan ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 320 KB

## Abstract 4,6โ€Diethoxyโ€, 4โ€ethoxyโ€6โ€hydrazinoโ€, 4,6โ€dichloroโ€, 4,6โ€di(methylthio)โ€and 4,6โ€dihydrazinopyrimidine react with aqueous hydrazine at 210ยฐ to give 3โ€methylโ€1,2,4โ€triazole. Evidence is presented that in this unprecedented ring contraction reaction the C(2)โ€N(3 or 1)โ€C(4 or 6)โ€C(5) fragme