Methanesulfonic Acid → (1R,2R)-2-((6-((3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol methanesulfonate

Participants

Reaction Conditions

Reaction Steps

To a suspension of (1R,2R)-2-((6-((3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol (1.84 g, 4.88 mmol) in EtOH (100 mL) was added methanesulfonic acid (478 mg, 4.98 mmol) at rt. The reaction mixture was stirred at 55° C. for 2 h. After cooling to rt, the mixture was concentrated under reduced pressure. The residue was diluted with 15 mL of water and freeze dried overnight to give (1R,2R)-2-((6-((3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol methanesulfonate as a tan solid (2.32 g, 100%). 1H NMR (300 MHz, MeOH-d4) δ 8.80 (s, 1H), 8.50 (dd, J=1.1, 4.7 Hz, 1H), 8.15 (dd, J=1.1, 8.1 Hz, 1H), 7.82 (s, 1H), 7.36-7.59 (m, 3H), 5.68 (s, 2H), 3.40-3.65 (m, 2H), 2.71 (s, 3H), 2.06 (d, J=12.2 Hz, 2H), 1.79 (d, J=6.6 Hz, 2H), 1.24-1.55 (m, 4H). LCMS (ESI) m/z 380 (M+H)+.

Provenance & Evidence