One-pot synthesis of spiro-acridine/indoline and indoline derivatives using (MWCNTs)-COOH/La2O3 hybrid as an effective catalyst |
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| Authors: | Mahshid Abdoli Navabeh Nami Zinatossadat Hossaini |
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| Affiliation: | Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran |
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| Abstract: | Spiro-acridine/indoline and indoline derivatives were synthesized by the three-component reaction of isatin, dimedone, and amines or amino acids in the presence of acid-functionalized multiwalled carbon nanotubes/La2O3 (MWCNTs)-COOH/La2O3 hybrid (5 mol%) as a highly efficient catalyst in ethanol. The assigned structure was further established by CHN analysis, NMR, and FTIR spectra. (MWCNTs)-COOH/La2O3 was fabricated by the reaction of functionalized (MWCNTs)-COOH and La(NO3)3.6H2O in acetic acid. Synthesis of La2O3 nanoparticles and their conjugation on the surface of MWCNT have been confirmed by FTIR, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy. |
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