One-pot synthesis of benzopyranophenazines using graphene oxide dichlorotriazine (GO-DCT) under microwave irradiations

Abstract

An efficient synthesis of benzopyranophenazines has been presented by one-pot four-component reaction of hydroxynaphthoquinone, o-phenylenediamine, benzaldehydes and malononitrile with graphene oxide dichlorotriazine (GO-DCT) as an efficient nanocatalyst under microwave irradiation in ethanol. The catalyst has been characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), Energy Dispersive Spectroscopy (EDS), Atomic force microscopy (AFM) and scanning electron microscopy (SEM). Atom economy, experimental simplicity, wide range of products, low amount of catalyst loading, the reusability of the catalyst, excellent yields in short reaction times and applying the microwave methodology as an efficient and green method are some of the substantial features of this method.