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Heteropolyacids as an efficient and reusable catalytic system for the regiospecific nitration of phenols with metal nitrates


Bita Baghernejad
Majid M. Heravi
Hossein A.Oskooie
Fatemeh F. Bamoharram

Abstract

Highly regiospecific mononitration of phenols and substituted phenols is accomplished employing a metal nitrate and a catalytic amount of heteropolyacid in acetonitrile. An exclusive ortho-selectivity was observed with excellent yields. A variety of metal nitrates were used to obtain o-nitrophenols exclusively in good to excellent yields. The use of heteropolyacid is key for the selectivity observed.

 

KEY WORDS: Heteropolyacids, Phenol, Nitration, Regiospecific

 

Bull. Chem. Soc. Ethiop. 2012, 26(1), 145-152.

DOI: http://dx.doi.org/10.4314/bcse.v26i1.17


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eISSN: 1726-801X
print ISSN: 1011-3924