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Synthesis of 2,3-dihydropyrido- and 2,3-dihydropyrimido-[1,4]diazepines from triaminopyridine and triaminopyrimidine

✍ Scribed by Braulio Insuasty; Alfredo Perez; John Valencia; Jairo Quiroga

Book ID
102338353
Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
224 KB
Volume
34
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The reaction of 2,3,6‐triaminopyridine 1 and 4,5,6‐triaminopyrimidine 2 with one equivalent of the chal‐cones 3, in acetic acid, leads to the formation of the 8‐amino‐2,3‐dihydro‐1__H__‐pyrido[2,3‐b][1,4]diazepine and 6‐amino‐2,3‐dihydro‐1__H__‐pyrimido[4,5‐b][1,4]diazepine derivatives 4 and 5. The products were characterized by NMR techniques such as ^13^C, ^1^H, and DEPT including selective ^13^C{^1^H} decoupling experiments.

📜 SIMILAR VOLUMES

Reaction of 4,5,6-triaminopyrimidine and
Reaction of 4,5,6-triaminopyrimidine and 2,4,5,6-tetraaminopyrimidine with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-2,3-dihydropyrimido[4,5-b][1,4]diazepines
✍ Insuasty O. Braulio; Insuasty I. Henry; Quiroga P. Jairo; Claudio Saitz; Carolin 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 192 KB 👁 1 views

## Abstract Several new 6‐amino‐ and 6,8‐diamino‐4‐aryl‐2,3‐dihydropyrimido[4,5‐__b__][1,4]diazepines were obtained from the reaction of 4,5,6‐triaminopyrimidine **1a** and 2,4,5,6‐tetraaminopyrimidine **1b** with one equivalent of 3‐dimethylaminopropiophenones **2** in absolute ethanol. Structure

ChemInform Abstract: Reaction of 4,5,6-T
ChemInform Abstract: Reaction of 4,5,6-Triaminopyrimidine and 2,4,5,6-Tetraaminopyrimidine with 3-Dimethylaminopropiophenones. Synthesis of New 4-Aryl-2,3-dihydropyrimido[4,5-b][1,4]diazepines.
✍ Braulio Insuasty O.; Henry Insuasty I.; P. Jairo Quiroga; Claudio Saitz; Carolin 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 28 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