Triethylamine → HCID 71616986, compound

Participants

Reaction Steps

To a mixture of Example 94b (76.3 mg, 0.198 mmol) and triethylamine (60.1 mg, 0.594 mmol) in dichloromethane (4 mL) was added dropwise methylsulfamoyl chloride (103 mg, 0.792 mmol), and the reaction mixture was stirred at ambient temperature for 1 hour. The reaction mixture was concentrated under reduced pressure, and the residue was mixed with dioxane (5 mL) and 1M aqueous sodium hydroxide (3 mL, 0.2 mmol) and heated at 70° C. for 1 hour. The reaction mixture cooled to ambient temperate and then neutralized with saturated aqueous ammonium chloride (50 mL) and the aqueous extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with saturated aqueous sodium chloride, dried (anhydrous magnesium sulfate), filtered, and concentrated. The residue was purified by preparative HPLC (C18, 10-80% acetonitrile in 0.1% TFA/water) to provide the title compound (11 mg, 11% yield). 1H NMR (300 MHz, DMSO-d6) ppm 12.04 (bs, 1H), 9.58 (s, 1H), 7.43-7.32 (m, 6H), 7.32-7.16 (m, 1H), 7.10 (dd, J=8.8, 2.7 Hz, 1H), 6.75 (d, J=8.8 Hz, 1H), 6.23 (t, J=2.3 Hz, 1H), 3.57 (bs, 3H), 2.35 (d, J=4.9 Hz, 3H). MS (ESI+) m/z 479.1 (M+H)+.

Provenance & Evidence