ChemInform Abstract: Reactions of Acylpyruvic Acids and 2,3-Dihydrofuran-2,3-diones with 2,3-Diaminopyridine

Autor:	N. N. Trapeznikova, N. M. Igidov, Yu. S. Kasatkina, O. A. Sof'ina, E. N. Koz'minykh, Kozminykh Vladislav O
Rok vydání:	2010
Předmět:	chemistry.chemical_compound chemistry Organic chemistry General Medicine Chemoselectivity 2 3-Dihydrofuran
Zdroj:	ChemInform. 33
ISSN:	1522-2667 0931-7597
DOI:	10.1002/chin.200212190
Popis:	Acylpyruvic acids readily react with 2,3-diaminopyridine to form (Z)-3-acylmethylene-1H-3,4-di- hydropyrido[2,3-b]pyrazin-2-ones. 5-Aryl-2,3-dihydrofuran-2,3-diones which can be regarded as lactones derived from γ-enolized aroylpyruvic acids react with 2,3-diaminopyridine under mild conditions, yielding regioisomeric (Z)-2-aroylmethylene-4H-1,2-dihydropyrido[2,3-b]pyrazin-3-ones. The structure of the products and reaction chemoselectivity are discussed.
Databáze:	OpenAIRE
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