[ClH:1].[Br:2][C:3]1[CH:4]=[N:5][CH:6]=[C:7]([C:9]#[C:10][C:11]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=2)[CH:8]=1>C(OCC)C>[ClH:1].[Br:2][C:3]1[CH:4]=[N:5][CH:6]=[C:7]([C:9]#[C:10][C:11]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=2)[CH:8]=1Add 1 M hydrogen chloride in diethyl ether (1.1 eq) to 3-bromo-5-(4-fluorophenylethynyl)-pyridine, from PREPARATION 24, in diethyl ether and stir for 2 h. Filter and dry the collected solid under high vacuum to give the title compound.
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