Synthesis and Spectroscopic Characterization of Water Soluble Triazene Dyes Based on Glyco-conjugated Pyrazolone Derivatives Catalyzed by an Acidic Ionic Liquid Supported on Silica-Coated Magnetite Nanoparticles
Abstract:Novel water soluble triazene dyes based on glyco-conjugated pyrazolone amines were synthetized by using N-propyl-2-pyrrolidonium hydrogen sulfate supported on silica-coated magnetite nanoparticle as acid catalyst. This organic-inorganic hybrid composite showed an excellent catalytic activity toward diazotization reaction of pyrazolone amines performing triazene dyes under solvent-free conditions in high yields. The spectroscopic properties confirmed the tendency of these dyes to exist in their hydrazo-keto tau… Show more
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