Biginelli Synthesis of Regioisomeric 5,6-Dihydro-4H-benzo[4,5]imidazo[1,2-a]pyranopyrimidin-4-ones

Autor:	I. V. Kanevskaya, O. V. Fedotova, A. S. Bondartsova
Rok vydání:	2020
Předmět:	chemistry.chemical_classification chemistry.chemical_compound chemistry 010405 organic chemistry Organic Chemistry Biginelli reaction Substituent 01 natural sciences Aldehyde Combinatorial chemistry 0104 chemical sciences
Zdroj:	Russian Journal of Organic Chemistry. 56:1753-1757
ISSN:	1608-3393 1070-4280
DOI:	10.1134/s1070428020100139
Popis:	A modified version of the three-component Biginelli reaction of 4-hydroxy-6-methyl-2H-pyran-2-one with aromatic aldehydes and 1H-benzimidazol-2-amine has been studied under thermal and microwave activation. Depending on the substituent in the initial aldehyde, angularly fused 5,6-dihydro-4H-benzo[4,5]imidazo[1,2-a]pyranopyrimidin-4-ones or 2-amino-1H-benzimidazol-3-ium arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)methanides have been obtained. A plausible mechanism of their formation has been proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c5c85cbe15592d6a067b0f6ee1ebca10 https://doi.org/10.1134/s1070428020100139 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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