Bromine → 5-(5-Bromo-2-(4-fluorophenyl)thiazol-4-yl)-3-methoxypyridin-2-amine

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To a solution of 5-(2-(4-fluorophenyl)thiazol-4-yl)-3-methoxypyridin-2-amine (68 mg, 0.23 mmol) in chloroform (3.6 mL) at 0° C. was added a solution of bromine (2.0 M in CHCl3, 0.17 mL, 0.34 mmol). The reaction was stirred at rt for 6-10 min and concentrated in vacuo. The resulting residue was azeotroped with 5% methanol in DCM solution (5 mL) and purified by prep TLC (SiO2, 1.0 mm, 95:5 DCM-methanol) to give 67 mg of 5-(5-bromo-2-(4-fluorophenyl)thiazol-4-yl)-3-methoxypyridin-2-amine was isolated as a tan solid: LCMS (m/z): 380.0 (MH+), tR=0.85 min.

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