A solution of lithium hydroxide monohydrate (30 mg, 0.72 mmol) in water (0.9 mL) was added dropwise to a suspension of 6-[5-(4-fluoro-phenyl)-3-methyl-3H-[1,2,3]triazol-4-ylethynyl]-nicotinic acid methyl ester (121 mg, 0.36 mmol) in THF (0.9 mL) and methanol (0.2 mL). The reaction mixture was then stirred at room temperature for 18 h and was then evaporated and the residue dissolved in water, acidified with HCl (1N), and the resulting precipitate filtered off to afford the title product (89 mg, 77%) as a light yellow solid after trituration with ethyl acetate. MS: m/e=321.1 [M−H]−.
