<p>In this study, we synthesized aminoformamidine-functionalized nitrogen-doped reduced graphene oxide (N-rGO-G) to facilitate the synthesis of benzylidene malononitrile derivatives via Knoevenagel condensation reaction. In the present study, benzylidene malononitrile derivatives were efficiently achieved using EtOH:H<sub>2</sub>O as a green solvent with high TOF values (556.50–175.20&#xa0;h<sup>−1</sup>). The developed nanocatalyst N-rGO-G was characterized by a series of advanced techniques, such as Fourier Transform Infrared spectroscopy (FTIR), RAMAN spectroscopy, Thermo gravimetric Analysis (TGA), Powder X-ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). A hot filtration test was also performed to test the heterogeneous nature of the synthesized catalyst. Notable advantages of this method include exceptional catalytic efficiency, environmentally friendly reaction conditions, easy recovery of the catalyst, simplified work-up, broad substrate compatibility, and recyclability up to seven cycles without significant loss of activity.</p> Graphical abstract <p></p>

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Eco-friendly and efficient development of C–C bond via Knoevenagel condensation reaction catalyzed with low-loaded aminoformamidine-functionalized nitrogen doped reduced graphene oxide

  • Alka,
  • Alka Agarwal

摘要

In this study, we synthesized aminoformamidine-functionalized nitrogen-doped reduced graphene oxide (N-rGO-G) to facilitate the synthesis of benzylidene malononitrile derivatives via Knoevenagel condensation reaction. In the present study, benzylidene malononitrile derivatives were efficiently achieved using EtOH:H2O as a green solvent with high TOF values (556.50–175.20 h−1). The developed nanocatalyst N-rGO-G was characterized by a series of advanced techniques, such as Fourier Transform Infrared spectroscopy (FTIR), RAMAN spectroscopy, Thermo gravimetric Analysis (TGA), Powder X-ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). A hot filtration test was also performed to test the heterogeneous nature of the synthesized catalyst. Notable advantages of this method include exceptional catalytic efficiency, environmentally friendly reaction conditions, easy recovery of the catalyst, simplified work-up, broad substrate compatibility, and recyclability up to seven cycles without significant loss of activity.

Graphical abstract