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Phosphated tungstate: An efficient new solid phosphoric acid catalyst for the synthesis of heterocyclic nitrones
Author(s) -
Banan Alireza,
Valizadeh Hassan,
Heydari Akbar,
Moghimi Abolghasem
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3944
Subject(s) - tungstate , chemistry , catalysis , phosphoric acid , fourier transform infrared spectroscopy , scanning electron microscope , heterogeneous catalysis , nuclear chemistry , solid acid , spectroscopy , inorganic chemistry , organic chemistry , chemical engineering , materials science , physics , quantum mechanics , engineering , composite material
Phosphated tungstate as a new, reusable and efficient solid phosphoric acid catalyst was synthesized and used to promote the reaction of diaminoglyoxime with various aromatic aldehydes. The prepared phosphated tungstate was characterized using various techniques including X‐ray diffraction, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier transform infrared spectroscopy and thermal analysis. A wide variety of heterocyclic nitrones were obtained under mild reaction conditions and in high yields by using the prepared catalyst.