Methanol → N-(5-{4-[(4-methylpiperidin-1-yl)carbonyl]-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl}-1,3-thiazol-2-yl)acetamide

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Reaction Steps

4-Methylpiperidine-1-carbonyl chloride (reagent preparation 37) (103 mg, 0.64 mmol) was added to a mixture of N-[5-(2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)-1,3-thiazol-2-yl]acetamide hydrochloride, (173 mg, 0.53 mmol) and potassium carbonate (374 mg, 2.7 mmol) in N,N-dimethylformamide (2 mL). The resulting mixture was stirred at room temperature for 18 hours, then methanol (2 mL) was added and concentrated. The residue was diluted with ethyl ether (40 mL), a solid was collected by filtration, and washed with ether and water to give N-(5-{4-[(4-methylpiperidin-1-yl)carbonyl]-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl}-1,3-thiazol-2-yl)acetamide (140 mg, 0.34 mol, 63% yield), 1H NMR (400 MHz, DMSO-d6): 7.58 (s, 1H), 7.35 to 7.32 (m, 2H), 6.91 (d, 1H), 4.36 (s, 2H), 4.12 (br, 2H), 3.54 to 3.47 (m, 4H), 2.71 to 2.65 (m, 2H), 2.00 (s, 3H), 1.60 to 1.43 (m, 3H), 1.16 to 1.067 (m, 2H), 0.92 (d, 3H); MS (EI) for C21H26N4O3S: 415 (MH+).

Provenance & Evidence