2,2'-Bipyridine → 6,6'-Dimethyl-2,2'-bipyridine-N-oxide

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Reaction Steps

6,6'-Dimethyl-2,2'-bipyridine (1.97 g, 0.0107 moles, Example 1) was dissolved in chloroform (10 ml). m-Chloroperbenzoic acid (1.85 g, 0.0107 moles) was dissolved in chloroform (40 ml), and added slowly to the bipyridine solution at 0°-5° C. After stirring for two hours at room temperature the solution was extracted twice with saturated sodium hydrogen carbonate solution and three times with water. The chloroform phase was dried and evaporated. The product was purified by flash chromatography.

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