Functionalized graphene oxide by 4-amino-3-hydroxy-1-naphthalenesulfonic acid as a heterogeneous nanocatalyst for the one-pot synthesis of tetraketone and tetrahydrobenzo[b]pyran derivatives under green conditions

Abstract

4-Amino-3-hydroxy-1-naphthalenesulfonic acid Functionalized graphene oxide (GO-ANSA) was prepared and characterized by different spectroscopic, microscopic and analytical methods including energy-dispersive X-ray spectroscopy (EDS), EDS elemental mapping, fourier-transform infrared (FT-IR) spectroscopy, field...