Cl.[OH:2][CH2:3][C:4]1[N:9]=[CH:8][C:7]([OH:10])=[CH:6][CH:5]=1.[F:11][C:12]1[CH:13]=[C:14]([CH:17]=[CH:18][CH:19]=1)[CH2:15]Br.C(=O)([O-])[O-].[K+].[K+].CC(=O)CC>O>[F:11][C:12]1[CH:13]=[C:14]([CH:17]=[CH:18][CH:19]=1)[CH2:15][O:10][C:7]1[CH:6]=[CH:5][C:4]([CH2:3][OH:2])=[N:9][CH:8]=1A mixture of 6-hydroxymethyl-pyridin-3-ol hydrochloride (1:1) (6.29 g, 38.9 mmol), 3-fluorobenzyl bromide (8.1 g, 42.8 mmol), potassium carbonate (10.76 g, 77.9 mmol) and 2-butanone (200 ml) was heated to 80° C. for 5 h. After cooling, water was added, and the mixture extracted with ethyl acetate. After drying of the organic layer with MgSO4, filtration and evaporation, the residue was purified by chromatography (SiO2, CH2Cl2—MeOH 95:5) to give the title compound as a brown solid (6.12 g, 67%). MS: m/e=234.3 (M+H+).
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