An efficient synthesis of 3-(3-methyl-1-aryl-1H-pyrazol-5-yl)-2H-2-chromen-2-one derivatives by the reaction of salicylaldehydes, 4-hydroxy-6-methyl-2H-pyran-2-one, and arylhydrazine in acetonitrile under reflux condition and in the presence of piperidine is reported. This three-component reaction has some advantages such as ease of handling, good yields, and easy purification. All structures were confirmed by infrared, mass, H-1 NMR, and C-13 NMR spectroscopy.
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Chernyshevsky Saratov Natl Res State Univ, Saratov, RussiaChernyshevsky Saratov Natl Res State Univ, Saratov, Russia
Kostritskiy, A. Yu.
Dmitriev, M. V.
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Perm State Natl Res Univ, Perm, RussiaChernyshevsky Saratov Natl Res State Univ, Saratov, Russia
Dmitriev, M. V.
Grinev, V. S.
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Chernyshevsky Saratov Natl Res State Univ, Saratov, Russia
Russian Acad Sci, Inst Biochem & Physiol Plants & Microorganisms, Saratov, RussiaChernyshevsky Saratov Natl Res State Univ, Saratov, Russia
Grinev, V. S.
Fedotova, O. V.
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Chernyshevsky Saratov Natl Res State Univ, Saratov, RussiaChernyshevsky Saratov Natl Res State Univ, Saratov, Russia