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.
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Bulletin of the Chemical Society of Ethiopia. ISSN: 1011-3924