Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones

• CARLOS BUSTOS ^[1] ; EDUARDO SCHOTT ^[2] ; MARCELA RÍOS ^[1] ; CHRISTIAN SÁNCHEZ ^[1] ; JUAN-GUILLERMO CÁRCAMO ^[1]
  1. [1] Universidad Austral de Chile

     Universidad Austral de Chile

     Valdivia, Chile

     
  2. [2] Universidad Andrés Bello

     Universidad Andrés Bello

     Santiago, Chile

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 54, Nº. 3, 2009, págs. 267-268
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • New 3,5-dimethyl-4-[(E)-4-(R1-phenyl)diazenyl]isoxazoles and 3,5-dimethyl-1-(R2-phenyl)-4-[(E)-(R1-phenyl)diazenyl]-1H-pyrazoles may be obtained by reaction of 3-[2-(R1-phenyl)hydrazono)]pentane-2,4-dione with H2NOH-HCl and R2-4-C6H4-NHNH2, respectively. The reactions were performed in ethanol as solvent and catalyzed by glacial acetic acid.