An Efficient Nano-Catalyzed Green Synthesis, Characterization of Substituted Pyrazoles & Study of Their Fluorescence Characteristics

Different derivatives of Cinnamaldehydeswere prepared by Claisen-Schmidt condensation (by using Strong basic reagent).The prepared Cinnamaldehydes were treated with Hydrazine hydrate in presence of ZnO Nano-catalyst under Microwave assisted solvent-free conditions to afford different substituted Pyrazoles. Green chemistry was employed. Comparisons of both microwave & conventional methods were studied & found that the first was more potent than the later. Compounds feature a donor‐π‐conjugated acceptor fluorescent activity system, and the fluorescence wavelength maxima were measured in 3 different solvents.The synthesized compounds were characterized by FT-IR,1HNMR& elemental analysis.

Keywords: Cinnamaldehydes, ZnO Nano-Catalyst, Microwave assisted Synthesis, Absorption maxima, Fluorescence maxima & Fluorescence spectrometer.