Potassium Carbonate → 1-(5-{3-[(5-Chloro-4-methoxypyrimidin-2-yl)amino]-5-methylphenyl}-1,3-thiazol-2-yl)cyclobutanol

Participants

Reaction Conditions

Reaction Steps

A flask was charged with a stir bar, 2,5-dichloro-4-methoxypyrimidine (69 mg, 0.38 mmol), Intermediate 15 (100 mg, 0.38 mmol), Pd2(dba)3 (35.2 mg, 0.038 mmol), XPhos (92 mg, 0.19 mmol), and potassium carbonate (106 mg, 0.77 mmol). The vial was fully evacuated and backfilled with argon three times. Fully degassed tert-amyl alcohol (1.30 mL) was added to the reaction mixture, which was sealed and stirred at 90° C. overnight. The reaction was then cooled to room temperature. The crude mixture was taken-up in DCM and directly purified by Chromatography on silica gel (0-100% ethyl acetate/hexanes) to provide 1-(5-{3-[(5-chloro-4-methoxypyrimidin-2-yl)amino]-5-methylphenyl}-1,3-thiazol-2-yl)cyclobutanol (93 mg, 0.23 mmol, 60%) as a dark blue solid. MS ESI: [M+H]+ m/z 403.1. 1H NMR (500 MHz, dmso) δ 9.78 (s, 1H), 8.32 (s, 1H), 7.98 (s, 1H), 7.89 (s, 1H), 7.46 (s, 1H), 7.10 (s, 1H), 6.50 (s, 1H), 4.05 (s, 3H), 2.56-2.50 (m, 2H), 2.36-2.27 (m, 5H), 1.94-1.82 (m, 2H). rhSYK activity=+++

Provenance & Evidence