Mild and Efficient Nitration of Aromatic Compounds Mediated by Transition-Metal Complexes

Abstract

Aromatic compounds were efficiently nitrated under facile reaction conditions by employing 69% nitric acid catalyzed by transition-metal complexes such as [Co(NH₃)₅Cl]Cl₂, [Cu(NH₃)₄]SO₄, Mn(acac)₃, [Ni(NH₃)₆]Cl₂, [Ni(en)₃]S₂O₃, and Hg[Co(SCN)₄]. The reaction was completed smoothly at room temperature and afforded corresponding mono-nitro derivatives in quantitative yield. This new method offers efficient and facile regioselective mononitration of aromatic compounds.

Keywords:

• Aromatic nitration
• nitric acid
• regioselective
• transition-metal complexes

ACKNOWLEDGMENT

The authors are thankful to the principal and management of Muffakhamjah College of Engineering and Technology for their constant encouragement, support, and permission to carry out the research work.

Notes

^a All the products were characterized by the usual spectral and analytical methods.

^b Isolated yields.

^a All the products were characterized by the usual spectral and analytical methods.

^b Isolated yields.