Author/Authors :
Quiroga، نويسنده , , Jairo and Portilla، نويسنده , , Jaime and Abonيa، نويسنده , , Rodrigo and Insuasty، نويسنده , , Braulio and Nogueras، نويسنده , , Manuel and Cobo، نويسنده , , Justo، نويسنده ,
Abstract :
A series of 5-amino-1-aroylpyrazoles 3 are synthesized directly by the reaction of β-aminocrotononitrile 1 with some structures containing the hydrazine moiety (X-NHNH2) 2 by refluxing ethanol in presence of sodium acetate. When semicarbazide 3i was used (X = CONH2), the reaction afforded the unexpected 7-aminopyrazolo[1,5-a]pyrimidine 4.
Keywords :
1-Aroyl-5-aminopyrazoles , 5-a]pyrimidine , ?-Aminocrotononitrile , Hydrazines
