[I:1][C:2]1[C:7]([OH:8])=[CH:6][CH:5]=[C:4]([CH3:9])[N:3]=1.[I:10][CH3:11]>>[I-:1].[OH:8][C:7]1[C:11]([I:10])=[N+:3]([CH3:2])[C:4]([CH3:9])=[CH:5][CH:6]=12-Iodo-3-hydroxy-6-methylpyridine (835 mg) and iodomethane (3 mL) were added in glass sealed cube, and the reaction mixture was reacted at 130° C. for 4 h and at 180° C. for 1 h. The reaction mixture was completely evaporated to give 3-hydroxy-2-iodo-1,6-dimethylpyridinium iodide (2-014-02) (1.42 g).
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