𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1,2-Methyl shift in the reaction of 4,7-dihydro-4,5-dimethyl-7-phenyl-(1,2,4)-triazolo[1,5-a]pyrimidine with tosyl azide

✍ Scribed by Sergey A. Komykhov; Sergey M. Desenko; Alexander S. Kaganovsky; Valery D. Orlov; Herbert Meier

Publisher
Journal of Heterocyclic Chemistry
Year
2000
Tongue
English
Weight
115 KB
Volume
37
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The reaction of the heterocyclic enamine 1 with tosyl azide (2) leads to the tosylimino derivative 4 of 1,2,4‐triazolo[1,5‐a]pyrimidine. The extrusion of nitrogen from the primary adduct 3 is followed by a 1,2‐shift of a methyl group. The structure determination of 4 is based on ^1^H and ^13^C nmr spectra including NOE measurements.

📜 SIMILAR VOLUMES

Cyclocondensation of 6-acetyl-4,7-dihydr
Cyclocondensation of 6-acetyl-4,7-dihydro-5-methyl-7-phenyl[1,2,4]triazolo[1,5-a]pyrimidine with hydroxylamine and hydrazine
✍ Sergey M. Desenko; Sergey A. Komykhov; Valery D. Orlov; Herbert Meier 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 164 KB

## Abstract The cyclocondensation of 6‐acetyl‐4,7‐dihydro‐5‐methyl‐7‐phenyl[1,2,4]triazolo[1,5‐__a__]pyrimidine (3) with hydroxylamine or hydrazine leads to 3a,4,9,9a‐tetrahydro‐3,9a‐dimethyl‐4‐phenylisoxazolo‐[5,4‐__d__][1,2,4]triazolo[1,5‐__a__]pyrimidine (4a) and 3a,4,9,9a‐tetrahydro‐3,9a‐dimeth

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

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