H3PMo7W5O40·24H2O catalyzed access to fused pyrazolopyranopyrimidine derivatives via one-pot multicomponent synthesis: green chemistry

Autor:	Kiran R. Khillare, Laxmikant D. Chavan, Dipak S. Aher, Sunil G. Shankarwar
Rok vydání:	2021
Předmět:	Green chemistry chemistry.chemical_compound Barbituric acid chemistry Ethyl acetoacetate Yield (chemistry) Hydrazine Organic chemistry General Chemistry Hydrate Environmentally friendly Catalysis
Zdroj:	Monatshefte für Chemie - Chemical Monthly. 153:79-85
ISSN:	1434-4475 0026-9247
DOI:	10.1007/s00706-021-02868-7
Popis:	An economic, sustainable, and straightforward environmentally friendly route for synthesis of 3-methyl-4-aryl-1,4-dihydropyrazolo[4ʹ,3ʹ:5,6]pyrano[2,3-d]pyrimidine-5,7(6H,8H)-diones via condensation of ethyl acetoacetate, hydrazine hydrate, barbituric acid, and aromatic aldehydes in the presence of catalytic amount of H3PMo7W5O40·24H2O under solvent-free condition was reported. This environmentally benign protocol offers selective synthesis of pyrazolopyranopyrimidine derivatives without any side product with excellent yield in shorter time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::65c3867eb4ab32a211c0bb7f3346d9a9 https://doi.org/10.1007/s00706-021-02868-7 Zobrazit plný text záznamu Full text from SpringerLink