▎ 摘　　要

Gold nanoparticles supported on thiol-functionalized reduced graphene oxide (AuNPs@RGO-SH) were found to be a biocompatible, stable, recyclable heterogeneous catalyst. The catalysts were characterized by field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), and X-ray diffraction spectroscopy (XRD). The obtained catalyst was used in synthesis of tetrahydro-4H-chromenes in aqueous media with excellent yields. The catalysts could be easily separated from the reaction mixture and recovered several times without a significant loss of activity.