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Ultrasound Mediated, Sodium Bisulfite Catalyzed, Solvent Free Synthesis of 6-Amino-3-methyl-4-substitued-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
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 Title & Authors
Ultrasound Mediated, Sodium Bisulfite Catalyzed, Solvent Free Synthesis of 6-Amino-3-methyl-4-substitued-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
Darandale, Sunil N.; Sangshetti, Jaiprakash N.; Shinde, Devanand B.;
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 Abstract
A simple, convenient and practical green synthetic protocol for sodium bisulfite catalyzed multicomponent reaction of ethyl acetoacetate, hydrazine hydrate, malononitrile, and various aldehydes for the synthesis of 6-amino-4-phenyl-3-methyl-2,4-ihydropyrano[2,3-c]pyrazole-5-carbonitriles using ultrasound irradiations in solvent free condition. This method provides the advantage of operational simplicity, shorter reaction time and excellent yields making the protocol environment friendly and economically lucrative.
 Keywords
Pyrano[2,3-c]pyrazole;Substituted aldehydes;Sodium bisulfite catalyst;
 Language
English
 Cited by
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