Cesium carbonate → 1-[2-({3-Methyl-5-[2-(1,1,1-trifluoro-2-hydroxypropan-2-yl)-1,3-thiazol-5-yl]phenyl}amino)pyrimidin-4-yl]ethanone

Participants

Reaction Conditions

Reaction Steps

To Intermediate 17 (500 mg, 1.654 mmol) in a scintillation vial was added dioxane (8.27 mL), cesium carbonate (1078 mg, 3.31 mmol), and 1-(2-chloropyrimidin-4-yl)ethanone (285 mg, 1.819 mmol). The system was purged and flushed with Ar(g) three times before adding Xantphos (144 mg, 0.248 mmol) and Pd(OAc)2 (40.8 mg, 0.182 mmol). The system was purged and flushed with Ar(g) three times before sealing the system and heating to 100° C. The reaction was stirred overnight and was cooled to room temperature. The reaction mixture was filtered through celite (washed with chloroform) and diluted with water. The organic layer was separated, dried over sodium sulfate, and was concentrated to dryness before purification by column chromatography (10-40% acetone in hexanes, linear gradient) to yield 1-[2-({3-methyl-5-[2-(1,1,1-trifluoro-2-hydroxypropan-2-yl)-1,3-thiazol-5-yl]phenyl}amino)pyrimidin-4-yl]ethanone (250 mg, 0.592 mmol, 36%). MS ESI: [M+H]+ m/z 423.1. 1H NMR (500 MHz, CDCl3) δ 8.66 (d, J=4.9, 1H), 7.95 (s, 2H), 7.34 (dd, J=8.1, 13.0, 3H), 7.10 (s, 1H), 2.73 (s, 3H), 2.42 (s, 3H), 1.85 (s, 3H). rhSYK activity=+++

Provenance & Evidence