Abstract
Fused polycyclic 4-aryl-3-methyl-4,7-dihydro-1H-pyrazolo[3,4-b]pyridines were obtained in a three-component regioselective reaction of 5-amino-3-methyl-1H-pyrazole, 2H-indene-1,3-dione and arylaldehydes in ethanol under ultrasound irradiation. This rapid method produced the products in short reaction times (4-5min) and excellent yields (88-97%).
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Chemistry, Organic / methods
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Chemistry, Pharmaceutical / methods
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Magnetic Resonance Spectroscopy
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Models, Chemical
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Pyrazoles / chemical synthesis
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Pyrazoles / chemistry*
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Pyridines / chemical synthesis
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Pyridines / chemistry*
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Spectrophotometry, Infrared
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Ultrasonics*
Substances
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1H-pyrazolo(3,4-b)pyridine
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Pyrazoles
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Pyridines