Regioselectivity in the multicomponent reaction of 5-aminopyrazoles, cyclic 1,3-diketones and dimethylformamide dimethylacetal under controlled microwave heating

Autor:	Ramadan Ahmed Mekheimer, Tahany Mahmoud Mohamed, Moustafa Sherief Moustafa, Mohamed Hilmy Elnagdi, Kamal Usef Sadek
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	Chemistry Organic Chemistry Regioselectivity aminopyrazoles Full Research Paper lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry Dimedone Microwave heating regioselectivity Organic chemistry lcsh:Q DMFDMA Dimethylformamide-dimethylacetal dimedone lcsh:Science
Zdroj:	Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 18-24 (2012) Beilstein Journal of Organic Chemistry
ISSN:	1860-5397
Popis:	The multicomponent reaction of 5-aminopyrazole derivatives with cyclic 1,3-dicarbonyl compounds and dimethylformamide dimethylacetal (DMFDMA) in DMF at 150 °C under controlled microwave heating afforded regioselectively 8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-ones 6 rather than the corresponding dihydropyrazolo[5,1-b]quinazolin-8(5H)-ones 4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f743cbfc4c5b80b0bc66881dbe9ea28 https://doaj.org/article/ad558acef5f14112903b9a232ea8ce55 Zobrazit plný text záznamu