Sequential oxidation and condensation of alcohols to benzazoles by graphene oxide as a bifunctional reagent in PEG as a green media

Sequential oxidation of alcohols to their corresponding aldehydes using graphene oxide (GO) as a greenoxidant and its further condensation with 2-amino (thio)phenol/aniline to yield benzazoles in poly(ethylene glycol) hasbeen described. Graphene oxide is explored as a heterogeneous bifunctional reagent for both oxidation as well ascondensation reaction thus making it a versatile catalyst. The prepared graphene oxide was characterized using FT-IR,Raman spectroscopy, XRD, and TEM to study its surface properties. This carbonaceous material could be readilyseparated using a simple filtration.

کلیدواژه ها:

Graphene oxide ، Benzazoles ، Sequential oxidation-condensation ، Green media ، Bifunctional reagent