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Synthesis of Derivatives of 7,8-Dihydro[1,2,4]triazolo[4,3-a]pyrimidin-7-one by the Oxidative Cyclization of 2-Arylidenehydrazino-4-hydroxy-6-methylpyrimidines

✍ Scribed by V. A. Yanchenko; A. M. Demchenko


Book ID
110392322
Publisher
Springer US
Year
2002
Tongue
English
Weight
99 KB
Volume
38
Category
Article
ISSN
0009-3122

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Addition of hydrazine to 4,7-dihydro[1,2
✍ Sergey A. Komykhov; Konstantin S. Ostras; Kyryl M. Kobzar; Vladimir I. Musatov; πŸ“‚ Article πŸ“… 2009 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 63 KB

## Abstract magnified image The 7‐aryl‐4,7‐dihydro[1,2,4]triazolo[1,5‐__a__]pyrimidines **1a**, **1b**, **1c** can undergo addition of hydrazine to the enamine double bond leading to hydrazine derivatives of tetrahydrotriazolopyrimidines **2a**, **2b**, **2c**; the process is usually accompanied by