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Molecules 2002, 7(10), 734-742; doi:10.3390/71000734

Silica Sulfuric Acid/ NaNO2 as a Novel Heterogeneous System for the Nitration of Phenols under Mild Conditions

Department of Chemistry, College of Science, University of Bu-Ali Sina, Zip Code 65174, Post Box No. 4135, Hamadan, I.R. Iran
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Received: 2 October 2002 / Revised: 14 October 2002 / Accepted: 14 October 2002 / Published: 31 October 2002
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Abstract

Nitrophenols can be obtained in moderate to high yields via nitrosationoxidation of phenols with silica sulfuric acid, NaNO2 and wet SiO2 at room temperature. In situ generation of HNO2 and a radical cation mechanism via the nitrous acid catalyzed (NAC) pathway appear to be applicable to phenol nitration using these reagents.
Keywords: Silica sulfuric acid; nitrosation-oxidation; nitration; nitrophenols Silica sulfuric acid; nitrosation-oxidation; nitration; nitrophenols
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Zolfigol, M.A.; Madrakian, E.; Ghaemi, E. Silica Sulfuric Acid/ NaNO2 as a Novel Heterogeneous System for the Nitration of Phenols under Mild Conditions. Molecules 2002, 7, 734-742.

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