Acetic Acid → HCID 24759599, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 1-(3-{5-[2-({(3R)-1-[(4-chlorophenyl)sulfonyl]piperidin-3-yl}amino)pyrimidin-4-yl]imidazo[2,1-b][1,3]thiazol-6-yl}phenyl)ethanone (0.10 g, 0.168 mmol) and hydroxylamine hydrochloride (0.0125 g, 0.188 mmoL) in methanol (2.0 mL) was added 0.2 mL of acetic acid. The mixture was heated at 50° C. for 3 hours. After cooled to room temperature, the mixture was diluted with dichloromethane (10 mL), washed with saturated aqueous sodium bicarbonate (5 mL×3), water (5 mL), dried over sodium sulfate and concentrated. Product was purified by flash chromatography on silica gel (methanol:dichloromethane:ethylacetate=0.5:7:2) to afford 0.069 g (67%) of the title compound as an off-white solid. M.p.=156-158° C. 400 MHz 1H NMR (DMSO-d6 at 60° C.) δ: 11.08 (s, 1H), 8.70 (br. s, 1H), 8.11 (d, J=4.8 Hz, 1H), 7.87 (s, 1H), 7.77-7.74 (m, 2H), 7.71-7.59 (m, 3H), 7.59-7.56 (m, 1H), 7.46 (t, J=7.6 Hz, 1H), 7.41 (d, J=4.4 Hz, 1H), 7.13 (d, J=7.6 Hz, 1H), 6.40 (d, J=5.2 Hz, 1H), 3.93 (br. s, 1H), 3.74-3.71 (m, 1H), 3.48-3.45 (m, 1H), 2.48-2.45 (m, 1H), 2.33 (t, J=7.6 Hz, 1H), 2.15 (s, 3H), 1.89-1.82 (m, 2H), 1.59-1.56 (m, 1H), 1.39-1.34 (m, 1H); LCMS: 608 [M+H].

Provenance & Evidence