Pursuant to our interest in the effects of β-substituents upon the gas phase basicities of heteroaromatic compounds, we needed various mono-substituted pyridines, especially 3-nitropyridine. Reports concerning the synthesis of this compound include the direct electrophilic nitration of pyridine,1and the perhydrol oxidation of 3-aminopyridine.2,3The procedures for both methods were unattractive and the yields poor. Recently a convenient preparation of 3-nitropyridine via Caro's acid4oxidation of 3-aminopyridine was reported.5Although this report has been widely referenced, it did not provide experimental details, such as procedure, yields, or spectral characterization.