Cesium carbonate → 3-Chloro-5-fluoro-4-[4-(6-methyl-pyrimidin-4-ylamino)-thiazolo[5,4-c]pyridin-2-yl]-benzonitrile

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Reaction Conditions

Reaction Steps

A mixture of 4-(4-bromo-thiazolo[5,4-c]pyridin-2-yl)-3-chloro-5-fluoro-benzonitrile (0.087 g, 0.24 mmol), 4-amino-6-methylpyrimidine (0.024 g, 0.22 mmol), Pd2(dba)3 (0.011 g, 0.01 mmol), XantPhos (0.014 g, 0.02 mmol) and cesium carbonate (0.192 g, 0.59 mmol) in dioxane (2.4 mL) was degassed with nitrogen and heated to 70° C. for 16 hours. The reaction mixture was diluted with DCM and water, and then filtered through Celite®. The layers of the filtrate were separated and the organic layer dried over Na2SO4 and concentrated under reduced pressure. The residue was purified by silica gel flash chromatography eluting with 0-5% MeOH in DCM and triturated with acetonitrile to give the desired compound as a yellow solid (0.033 g, 35% yield). 1H NMR (300 MHz, DMSO-d6): δ 10.70 (s, 1H), 8.63 (d, J=1.2 Hz, 1H), 8.46 (d, J=5.6 Hz, 1H), 8.27 (t, J=1.3 Hz, 1H), 8.22 (dd, J=9.0, 1.4 Hz, 1H), 7.85 (d, J=5.6 Hz, 1H), 7.56 (s, 1H), 2.39 (s, 3H). LCMS (Method C): RT=3.30 min, m/z: 397 [M+H+].

Provenance & Evidence