Sharif University of Technology Scientia Iranica 1026-3098 25 6 2018 12 01 One-pot synthesis of benzopyranophenazines using graphene oxide dichlorotriazine (GO-DCT) under microwave irradiations 3322 3330 20725 10.24200/sci.2018.5606.1371 EN Javad Safaei-Ghomi Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, I. R. Iran Maryam Tavazo Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167 Hossein Shahbazi-Alavi Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Journal Article 2017 11 18 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. https://scientiairanica.sharif.edu/article_20725_037b88abd6517e518cce4a5e426488ae.pdf