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Ring-chain tautomerism of 3-alkylthio-1,5-dihydro-1,2,4-triazolium salts

✍ Scribed by K. N. Zelenin; O. B. Kuznetsova; V. V. Alekseev; V. P. Sergutina; P. V. Terent'ev; V. V. Ovcharenko

Publisher
Springer US
Year
1991
Tongue
English
Weight
406 KB
Volume
27
Category
Article
ISSN
0009-3122

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Ring-chain transformations, IX[1] Synthe
Ring-chain transformations, IX[1] Synthesis and ring-chain tautomerism of 2-(ξœͺ-aminoalkyl)-1,3,4-thiadiazoles
✍ Radics, Ute ;Liebscher, JΓΌrgen ;Ziemer, Burkhard ;Rybakov, Viktor πŸ“‚ Article πŸ“… 1992 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 691 KB

Thiohydrazide compounds 1 react with lactam acetals 2 or solution, however, most of them undergo a reversible ringlactim ethers 3 by condensation giving unusual zwitterionic chain transformation to novel 2-(o-aminoalkyl)-1,3,4-thiaditautomers 5 of lactam thioacylhydrazones 4. These compounds azole s