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One‐pot synthesis of spiro‐acridine/indoline and indoline derivatives using ( MWCNTs )‐ COOH / La 2 O 3 hybrid as an effective catalyst
Author(s) -
Abdoli Mahshid,
Nami Navabeh,
Hossaini Zinatossadat
Publication year - 2021
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.4192
Subject(s) - indoline , isatin , chemistry , dimedone , catalysis , acridine , fourier transform infrared spectroscopy , acetic acid , scanning electron microscope , nanoparticle , nuclear chemistry , organic chemistry , chemical engineering , nanotechnology , materials science , engineering , composite material
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/La 2 O 3 (MWCNTs)‐COOH/La 2 O 3 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/La 2 O 3 was fabricated by the reaction of functionalized (MWCNTs)‐COOH and La(NO 3 ) 3 .6H 2 O in acetic acid. Synthesis of La 2 O 3 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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