[F:1][C:2]1[CH:9]=[C:8]([CH:10]([OH:17])[C:11]2[CH:12]=[N:13][CH:14]=[CH:15][CH:16]=2)[CH:7]=[CH:6][C:3]=1[C:4]#[N:5]>C(Cl)Cl.O=[Mn]=O>[F:1][C:2]1[CH:9]=[C:8]([C:10]([C:11]2[CH:12]=[N:13][CH:14]=[CH:15][CH:16]=2)=[O:17])[CH:7]=[CH:6][C:3]=1[C:4]#[N:5]2-Fluoro-4-(1-hydroxy-1-pyridin-3-yl-methyl)-benzonitrile (1.04 g, 4.55 mmol) and MnO2 (3.96 g, 45.5 mmol) were stirred in CH2Cl2 (100 mL) for 4 h. The solution was filtered through a celite pad and concentrated to give the title compound.
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