preparation and characterization of nano-zno catalyst and its application insynthesis of2-amino-3-phenylsulfonyl-4-aryl-4h-benzo[h]chromen derivatives

An efficient and environmentally adapted synthesis of 2-amino-3-phenylsulfonyl-4-aryl-4h-benzo[h]chromenderivatives by condensation of a wide range of aryl aldehydes, α-naphthol and (phenylsulfonyl)acetonitrile using a catalytic amount of nano-znounder solvent-free condition is explained. this catalyst was characterized by scanning electron microscopy (sem), fourier transform infrared spectroscopy (ft-ir),x-ray diffraction spectroscopy (edx)and thermogravimetric analysis (tg).as aresult, 2-amino-3-phenylsulfonyl-4-aryl-4h-benzo[h]chromens were produced under facile conditions in high yield (89-96%) and high rate (8-15 min) using nano-zno as a recyclable catalyst.