Nitration of Substituted Phenols by Different Efficient Heterogeneous Systems

  • D Habibi
  • MA Zolfigol
  • M Shiri
  • A Sedaghat
Keywords: Nitration, nitrophenols, sodium nitrate, oxalic acid dihydrate, sodium hydrogen sulphate, aluminum hydrogen sulphate, silica sulphuric acid, wet SiO2.

Abstract

Nitration of substituted phenols were carried out by the mixture of sodium nitrite and wet SiO2 (50% w/w) in the presence of four different efficient heterogeneous systems: 1) oxalic acid dihydrate (I), 2) sodium hydrogen sulphate (II), 3) aluminum hydrogen sulphate (III) and 4) silica sulphuric acid (IV) in CH2Cl2 at room  temperature and high yields. Optimum conditions for theses systems and the regioselectivities of the reactions are reported.


KEYWORDS: Nitration, nitrophenols, sodium nitrate, oxalic acid dihydrate, sodium hydrogen sulphate, aluminum hydrogen sulphate, silica sulphuric acid, wet SiO2.

Published
2015-09-30
Section
Articles

Journal Identifiers


eISSN: 0379-4350