HNO3@nano SiO2 : an efficient catalytic system for the synthesis of multi-substituted imidazoles under solvent-free conditions
Joint Authors
Nikoofar, Kobra
Dizgarani, Shekoufe Moazzez
Source
Journal of Saudi Chemical Society
Issue
Vol. 21, Issue 7 (30 Nov. 2017), pp.787-794, 8 p.
Publisher
Publication Date
2017-11-30
Country of Publication
Saudi Arabia
No. of Pages
8
Main Subjects
Topics
Abstract EN
Concentrated nitric acid supported on nano silica (HNO3@nano SiO2) has been prepared via a simple procedure.
The synthetic powder has been utilized as an effective catalytic system for the synthesis of various 2,4,5-trisubstituted imidazoles under solvent-free conditions at 100 C in good to excellent yields.
In addition, under the same reaction conditions, 1,2,4,5-tetrasubstitued imidazoles have also been performed successfully.
The recovery and reusability of HNO3@nano SiO2 have been checked in 3 runs without activity loss.
The significant features of this acidic nanocatalyst in the reported procedure, are high yield of products, short reaction times, green reaction media, and vast range of substrates usage.
The proposed mechanism of the cyclo-condensation has also been represented
American Psychological Association (APA)
Nikoofar, Kobra& Dizgarani, Shekoufe Moazzez. 2017. HNO3@nano SiO2 : an efficient catalytic system for the synthesis of multi-substituted imidazoles under solvent-free conditions. Journal of Saudi Chemical Society،Vol. 21, no. 7, pp.787-794.
https://search.emarefa.net/detail/BIM-781840
Modern Language Association (MLA)
Nikoofar, Kobra& Dizgarani, Shekoufe Moazzez. HNO3@nano SiO2 : an efficient catalytic system for the synthesis of multi-substituted imidazoles under solvent-free conditions. Journal of Saudi Chemical Society Vol. 21, no. 7 (Nov. 2017), pp.787-794.
https://search.emarefa.net/detail/BIM-781840
American Medical Association (AMA)
Nikoofar, Kobra& Dizgarani, Shekoufe Moazzez. HNO3@nano SiO2 : an efficient catalytic system for the synthesis of multi-substituted imidazoles under solvent-free conditions. Journal of Saudi Chemical Society. 2017. Vol. 21, no. 7, pp.787-794.
https://search.emarefa.net/detail/BIM-781840
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 793-794
Record ID
BIM-781840