Sulfamic Acid Catalysed One-Pot Three-Component Condensation for the Synthesis of 1,4-dihydropyrano[2,3- c ]pyrazoles

Sulfamic Acid Catalysed One-Pot Three-Component Condensation for the Synthesis of 1,4-dihydropyrano[2,3- c ]pyrazoles

A clean and simple synthesis of 6-amino-4-aryl-3-methyl-1-phenyl-1,4-dihydropyrano[2,3- c]pyrazole-5-carbonitriles was accomplished in good to excellent yields via the one-pot three component condensation of 3-methyl-1-phenyl-2-pyrazolin-5-one, an aromatic aldehyde, and malononitrile catalysed by su...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of chemical research 2008-05, Vol.2008 (5), p.278-279
Hauptverfasser: Shinde, Sandeep V., Jadhav, Wamanrao N., Kondre, Jeevan M., Gampawar, Sumit V., Karade, Nandkishor N.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A clean and simple synthesis of 6-amino-4-aryl-3-methyl-1-phenyl-1,4-dihydropyrano[2,3- c]pyrazole-5-carbonitriles was accomplished in good to excellent yields via the one-pot three component condensation of 3-methyl-1-phenyl-2-pyrazolin-5-one, an aromatic aldehyde, and malononitrile catalysed by sulfamic acid in ethanol.
ISSN:1747-5198
2047-6507
DOI:10.3184/030823408X321051