[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:10][OH:11])=[N:6][C:7]=1[NH:8][CH3:9]>C(Cl)(Cl)Cl.[O-2].[O-2].[Mn+4]>[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([CH:10]=[O:11])=[N:6][C:7]=1[NH:8][CH3:9]A suspension of 0.33 g of (5-methyl-6-methylaminopyridin-2-yl)methanol (2.17 mmol) and 1.6 g of manganese dioxide (18.4 mmol) in 12 ml of chloroform is heated under reflux for 1 hour. The insoluble matter is removed by filtration on celite and then the solvent evaporated under vacuum. The title product is purified by chromatography on a silica column (eluent: chloroform). 0.25 g of a yellow solid is recovered.
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