Copper-based oxide glass-ceramic was successfully synthesized through the single-step melt annealing technique. Synthesized glass-ceramics characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) supported with energy dispersive (EDX) mapping. Pyrazolo[1,5-a]pyrimidines 5a-f were via reaction of 5-amino-1H-pyrazole-4-carboxamide (1) enaminones 2a-f in presence catalyst...

in present paper a simple procedure for the synthesis of enaminones without catalyst from 1,3-diketones that reacted with primary or secondary amines in ethanol as solvent, as well as the reaction of enaminones with unsaturated esters such as dimethyl acetylene dicarboxylate are reported.