H3PW12O40: Highly Efficient Catalysts for the Synthesis of Novel 1,3,5- Triaryl-2-Pyrazoline Derivatives

A series of novel 1,3,5-triaryl-2-pyrazoline derivatives has been synthesized by the reaction of chalcone and phenylhydrazine in high yields. The structures of compounds obtained were determined by IR and 1H NMR spectra.