2022
DOI: 10.5155/eurjchem.13.1.41-48.2168 View full text |Buy / Rent full text
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Susma Das,
Labet Bankynmaw Marpna,
Jai Narain Vishwakarma

Abstract: An efficient and regioselective synthetic reaction friendly to the environment has been described to synthesize various derivatives of pyrazolo[1,5-a]quinozolinone. Condensation of aminopyrazole (4a-m) with formylated dimedone (3) in the presence of KHSO4, under ultrasonic irradiation furnished 2/3-substituted 8,8-dimethyl-8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-one (6a-m). This is a clean reaction, giving excellent yields with short reaction time. The structures were elucidated with the help of spectral an… Show more

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