[CH2:1]([C:3]1[CH:8]=[CH:7][N:6]=[CH:5][CH:4]=1)[CH3:2].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+].S(=O)(=O)(O)O.[C:26](=O)(O)[O-:27].[Na+]>CO.O>[CH2:1]([C:3]1[CH:8]=[CH:7][N:6]=[C:5]([CH2:26][OH:27])[CH:4]=1)[CH3:2]
A solution of 4-ethylpyridine (Commercial, e.g. Sigma-Aldrich) (10.7 g), ammonium peroxydisulfate (45.6 g) and concentrated sulphuric acid (4.5 ml) in methanol (150 ml)/water (70 ml) was refluxed for 24 h. The reaction mixture was slowly added onto aqueous sodium bicarbonate and extracted with chloroform (4×500 ml). This was dried over sodium sulphate, concentrated in vacuo and purified through silica using 0-60% ethyl acetate in hexane to give the title compound, 1.16 g Mass Spec: [MH]+=138.0
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