Title : ( Nanomagnetically modified polyphosphoric acid (NiFe2O4@SiO2–PPA): an efficient, fast, and reusable catalyst for the synthesis of 2-thioxoquinazolinones under solvent-free conditions )
Authors: Hossein Eshghi , A. Khojastehnezhad , Farid Moeinpour , Mehdi Bakavoli , N. Zeinabi , S. Allameh ,
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Abstract
Polyphosphoric acid functionalized silica-coated magnetic nanoparticles with core–shell structure (NiFe2O4@SiO2–PPA) has been used as a magnetically recyclable green catalyst for the one-pot three-component synthesis of 2-thioxoquinazolinones by the reaction of isatoic anhydride, primary amines and thiourea under neat conditions. The catalyst is readily recovered by simple magnetic decantation and can be recycled five times with no significant loss of catalytic activity.
Keywords
, Polyphosphoric acid , Magnetic nanoparticles, One-pot, three component, 2-Thioxoquinazolinones, Isatoic anhydride
@article{paperid:1049659,
author = {Eshghi, Hossein and A. Khojastehnezhad and Farid Moeinpour and Bakavoli, Mehdi and N. Zeinabi and S. Allameh},
title = {Nanomagnetically modified polyphosphoric acid (NiFe2O4@SiO2–PPA): an efficient, fast, and reusable catalyst for the synthesis of 2-thioxoquinazolinones under solvent-free conditions},
journal = {Research on Chemical Intermediates},
year = {2015},
volume = {41},
number = {10},
month = {September},
issn = {0922-6168},
pages = {7915--7924},
numpages = {9},
keywords = {Polyphosphoric acid ; Magnetic nanoparticles; One-pot; three component; 2-Thioxoquinazolinones; Isatoic anhydride},
}
%0 Journal Article
%T Nanomagnetically modified polyphosphoric acid (NiFe2O4@SiO2–PPA): an efficient, fast, and reusable catalyst for the synthesis of 2-thioxoquinazolinones under solvent-free conditions
%A Eshghi, Hossein
%A A. Khojastehnezhad
%A Farid Moeinpour
%A Bakavoli, Mehdi
%A N. Zeinabi
%A S. Allameh
%J Research on Chemical Intermediates
%@ 0922-6168
%D 2015
