m-Chloroperbenzoic acid → 3-nitro-2-[3-[(E)-2-(1-oxido-3-pyridyl)vinyl]phenylamino]pyridine

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Reaction Steps

To a solution of 3-nitro-2-[3-[(E)-2-(3-pyridyl)vinyl]phenylamino]pyridine (2.22 g) in dichloromethane (70 ml) was added m-chloroperbenzoic acid (1.81 g). The mixture was stirred at room temperature for 1 hour, then poured into aqueous sodium bicarbonate and extracted with chloroform. The organic solution was washed with aqueous sodium bicarbonate and brine, dried over magnesium sulfate and concentrated. The residue was chromatographed on silica gel column (8% methanol in chloroform) to give 3-nitro-2-[3-[(E)-2-(1-oxido-3-pyridyl)vinyl]phenylamino]pyridine (1.51 g).

Provenance & Evidence