New general synthesis of benzo[4,5]imidazo[1,2-a]pyrimidine and benzo[4,5]imidazo[2,1-b]quinazoline derivatives
- Authors: Harutyunyan A.A.1
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Affiliations:
- Mndzhoyan Institute of Fine Organic Chemistry, Scientific Technological Center of Organic and Pharmaceutical Chemistry
- Issue: Vol 52, No 7 (2016)
- Pages: 1012-1017
- Section: Article
- URL: https://bakhtiniada.ru/1070-4280/article/view/214703
- DOI: https://doi.org/10.1134/S1070428016070150
- ID: 214703
Cite item
Abstract
The reactions of benzene-1,2-diamine with 5-substituted 2-(alkylsulfanyl)-4-methylpyrimidin-6(1H)-ones and 2-(propylsulfanyl)- and 5-iodo-2-(propylsulfanyl)-3,4-dihydroquinazolines at 175–185°C under solvent-free conditions unexpectedly afforded benzo[4,5]imidazo[1,2-a]pyrimidine, benzo[4,5]imidazo[2,1-b]-quinazoline, and 2,2′-(benzene-1,2-diyldiimino)bis[pyrimidin-4(3H)-ones]. The described reaction is the first example of synthesis of these heterocyclic systems by fusion of benzimidazole to pyrimidine or quinazoline and is likely to follow ANRORC mechanism.
About the authors
A. A. Harutyunyan
Mndzhoyan Institute of Fine Organic Chemistry, Scientific Technological Center of Organic and Pharmaceutical Chemistry
Author for correspondence.
Email: harutyunyan.arthur@yahoo.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
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