## 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
The reaction of 2,4,5,6-tetraaminopyrimidine with chalcones
✍ Scribed by Braulio Insuasty; Alfredo Pérez; Diego González; Jairo Quiroga; Herbert Meier
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2000
- Tongue
- English
- Weight
- 142 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0022-152X
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✦ Synopsis
Abstract
The reaction of the tetraaminopyrimidine 1 with the chalcones 2a‐f yields, in the presence of catalytic amounts of acetic acid, the 1__H__‐pyrimido[4,5‐b][1,4]diazepine derivatives 3a‐f. The cyclization process consists of a condensation reaction and a Michael type addition.
📜 SIMILAR VOLUMES
## Abstract New 6‐amino and 6,8‐diamino‐2‐aryl‐2,3‐dihydro‐4‐styryl‐1__H__‐pyrimido[4,5‐__b__][1,4]diazepines were obtained in the reaction of 2,4,5,6‐tetraaminopyrimidine 1a and 4,5,6‐triaminopyrimidine 1b with one equivalent of the diaryli dene acetones 2 in absolute ethanol with acetic acid as t
## 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
## 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