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Synthesis of [1,2,4]triazolo[1,5-a]quinazolines from 7-methyl-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine

✍ Scribed by Dmitrii Yu. Sidorenko; Valerii D. Orlov

Book ID: 108209757
Publisher: Royal Society of Chemistry
Year: 2010
Tongue: English
Weight: 214 KB
Volume: 20
Category: Article
ISSN: 0959-9436
DOI: 10.1016/j.mencom.2010.05.016

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ChemInform Abstract: Synthesis of [1,2,4

ChemInform Abstract: Synthesis of [1,2,4]Triazolo[1,5-a]quinazolines from 7-Methyl-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine (III).

✍ Dmitrii Yu. Sidorenko; Valerii D. Orlov 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 22 KB 👁 1 views

Addition of hydrazine to 4,7-dihydro[1,2

Addition of hydrazine to 4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidines: Hydrazine derivatives of 4,5,6,7-tetrahydro[1,2,4]triazolo[1,5-a]pyrimidine

✍ Sergey A. Komykhov; Konstantin S. Ostras; Kyryl M. Kobzar; Vladimir I. Musatov; 📂 Article 📅 2009 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 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

5,5-Dimethyl-2-phenyl-4,5-dihydro-1,2,4-

5,5-Dimethyl-2-phenyl-4,5-dihydro-1,2,4-triazolo[1,5-a][1,3,5]triazin-7-amine

✍ Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wa 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 945 KB

The title compound, C 12 H 14 N 6 , was synthesized via cyclocondensation of 5-amino-1-guanyl-3-phenyl-1,2,4-triazole with acetone. Only one tautomeric form with an H atom at the triazine N atom was observed in the crystal structure. The compound crystallizes with two almost identical molecules in t

ChemInform Abstract: Addition of Hydrazi

ChemInform Abstract: Addition of Hydrazine to 4,7-Dihydro[1,2,4]triazolo[1,5-a]pyrimidines: Hydrazine Derivatives of 4,5,6,7-Tetrahydro[1,2,4]triazolo[1,5-a]pyrimidine.

✍ Sergey A. Komykhov; Konstantin S. Ostras; Kyryl M. Kobzar; Vladimir I. Musatov; 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 24 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Chemical conversions of 5,7-disubstitute

Chemical conversions of 5,7-disubstituted dihydro-1,2,4-triazolo[1,5-a]pyrimidines

✍ S. M. Desenko; V. D. Orlov; V. V. Lipson 📂 Article 📅 1990 🏛 Springer US 🌐 English ⚖ 398 KB

7,7-Dimethyl-2-phenyl-6,7-dihydro-1,2,4-

7,7-Dimethyl-2-phenyl-6,7-dihydro-1,2,4-triazolo[1,5-a][1,3,5]triazin-5-amine

✍ Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wa 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 494 KB

The title compound, C 12 H 14 N 6 , was synthesized via cyclocondensation of 5-guanidino-3-phenyl-1,2,4-triazole with acetone. Only one tautomeric form with the NH H atom vicinal to the methyl groups was observed in the crystal structure. The triazine ring adopts a flattened half-boat conformation.