(2-Chlorophenyl)-(4,6-dichloro-2-methylsulfanylpyrimidin-5-yl)-methanol → (2-Chlorophenyl)-(4,6-dichloro-2-methylsulfanylpyrimidin-5-yl)-methanone
Reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]([C:10]1[C:11]([Cl:19])=[N:12][C:13]([S:17][CH3:18])=[N:14][C:15]=1[Cl:16])[OH:9]>C1(C)C=CC=CC=1.[O-2].[Mn+4].[O-2]>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]([C:10]1[C:11]([Cl:19])=[N:12][C:13]([S:17][CH3:18])=[N:14][C:15]=1[Cl:16])=[O:9]Participants
4
Reactant 1
Product 1
Reagents, catalysts & solvents 2
Procedure
To a solution of (2-chlorophenyl)-(4,6-dichloro-2-methylsulfanylpyrimidin-5-yl)-methanol (8.6 g, 25.6 mmol) in toluene (300 mL) was added manganese (IV) oxide (Aldrich) (22.3 g, 10 eq), and the resulting mixture was heated to reflux with stirring for a total of 5 hours. The reaction was cooled to room temperature and then filtered through a 3.5 cm pad of Celite and the filtrate was concentrated to give 8.84 g of a crude product. Purification by Flash Column Chromatography on Silica Gel eluting with a gradient starting with pure hexanes and progressing to 2% ethyl acetate in hexanes and finally 5% ethyl acetate in hexanes gave the title compound as an off-white powder (1.388 g, (M+H)+=333).