Ultrasound assisted synthesis of chromone based α-aminophosphonate catalyzed by CdS/CNT nanocomposite

In this work, a novel ultrasound mediated synthesis of chromone based α-aminophosphonate using CdS/CNT nanocomposite has been reported. The nanocomposite was characterized using techniques like Fourier-Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction, Raman spectroscopy, Brunauer–Emmett–Teller (BET) analysis, and morphology studies were carried out using Field-Emission Scanning Electron Microscopy, and Transmission Electron Microscopy. Further, the synthesized α-aminophosphonate derivatives were characterized using FTIR, ¹H-NMR and CHN elemental analysis. The present method provides various advantages such as operational simplicity, high yield, short reaction time, easy workup and solvent free condition. In addition, the catalyst exhibited remarkable reusability, demonstrating consistent performance up to five runs without any significant loss of its catalytic activity. The ICP-AES analysis suggested that there is no leaching of CdS from the surface of CNT.