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Ferrite nanoparticles supported on natural wool in one‐pot tandem oxidative reactions : strategy to synthesize benzimidazole, quinazolinone and quinoxaline derivatives
Author(s) -
Shaabani Ahmad,
Hezarkhani Zeinab
Publication year - 2017
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.3542
Subject(s) - chemistry , nanomaterial based catalyst , naphtha , thermogravimetric analysis , catalysis , nuclear chemistry , organic chemistry
Two tandem oxidative two‐component reactions (O‐2CRs) and Ugi‐type three‐component reactions (OU‐3CRs) of aromatic hydrocarbons of petroleum naphtha have been investigated for the synthesis of 2‐phenyl‐1 H ‐benzo [ d ]imidazole, 2‐aryl‐4‐quinazolinone and 3,4‐dihydroquinoxalin‐2‐amine derivatives using six new biopolymer‐supported ferrite nanocatalysts: CoFe 2 O 4 @wool‐SO 3 H, MnFe 2 O 4 @wool‐SO 3 H, ZnFe 2 O 4 @wool‐SO 3 H, MnCoFe 2 O 4 @wool‐SO 3 H, ZnCoFe 2 O 4 @wool‐SO 3 H and CrCoFeO 4 @wool‐SO 3 H. The best results are obtained with the CrCoFeO 4 @wool‐SO 3 H catalyst. All of the catalysts were characterized using flame atomic absorption spectrometry , X‐ray diffraction, thermogravimetric analysis, scanning electron microscopy and energy‐dispersive spectroscopy. To the best of our knowledge, this approach can be considered as the first example of O‐2CRs and OU‐3CRs of aromatic hydrocarbons of petroleum naphtha with ferrite nanocatalysts, which would be very useful from a practical point of view. Copyright © 2016 John Wiley & Sons, Ltd.