Graphene Oxide Functionalized Organic-Inorganic Hybrid (GO-Si-NH2-PMo): An Efficient and Green Catalyst for the Synthesis of Tetrahydrobenzo[b]pyran Derivatives

In this study, a graphene oxide (GO) functionalized organic-inorganic hybrid was prepared by covalently immobilization of organic (3-aminopropyltrimethoxysilane) and inorganic (H3PMo12O40) groups on the basal plane of GO. Structure of catalyst was characterized with different analysis such as FT-IR, SEM, TEM, EDS, WDX, XRD, and TGA. All analyses approve the successful covalently immobilization of organic and inorganic parts on the GO. The activity of catalyst has been tested for the synthesis of tetrahydrobenzo[b]pyran derivatives under solvent-free condition in short reaction time and good to excellent yields. [GRAPHICS] .

Automated summary

In this study, a graphene oxide functionalized organic-inorganic hybrid was prepared by covalently immobilizing organic and inorganic groups on the basal plane of GO. The catalyst's structure was characterized through various analyses, confirming the successful immobilization of both parts. The catalyst demonstrated high activity in the synthesis of tetrahydrobenzo[b]pyran derivatives under solvent-free conditions, with good to excellent yields achieved in a short reaction time.