Abstract
4-Nitro-o-xylene was selectively oxidized to 2-methyl-4-nitrobenzoic acid using dilute nitric acid as the oxidizing agent under atmospheric pressure. The oxidation of 4-nitro-o-xylene was effectively promoted by an addition of radical initiators. Under reflux, 2-methyl-4-nitrobenzoic acid was afforded in high yield using nitric acid combined with N-hydroxyphthalimide, cobalt dichloride (CoCl2 · 6H2O), manganese acetate (Mn(OAc)2 · 4H2O) and phase transfer catalyst.
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Wei, SB., Tang, B. & Peng, XH. Oxidation of 4-nitro-o-xylene with nitric acid using N-hydroxyphthalimide under phase transfer conditions. Chem. Pap. 69, 580–585 (2015). https://doi.org/10.1515/chempap-2015-0054
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DOI: https://doi.org/10.1515/chempap-2015-0054