Sodium hydride → HCID 178482428, compound

Participants

Reaction Steps

To a solution of 2-(2-amino-1H-benzo[d]imidazol-5-yl)-4-chlorophenol (0.40 g, 1.5 mmol) in N,N-dimethylformamide (5 mL) at 0° C. was added sodium hydride (60% w/w dispersion in mineral oil, 0.07 g, 1.8 mmol). The mixture was allowed to warm to ambient temperature and stirred for 1 h. 2,4,5-Trifluoro-N-methyl-N-(1,2,4-thiadiazol-5-yl)benzenesulfonamide (0.52 g, 1.7 mmol) was added and the mixture was stirred at ambient temperature for 16 h. The mixture was partitioned between ethyl acetate (200 mL) and water (20 mL). The organic phase was washed with water (10 mL) and brine (2×10 mL), dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography eluting with a 0-10% gradient of methanol in ethyl acetate, followed by trituration in hexanes. The solid thus obtained was suspended in water (5 mL) and lyophilized to afford 4-(2-(2-amino-1H-benzo[d]imidazol-5-yl)-4-chlorophenoxy)-2,5-difluoro-N-methyl-N-(1,2,4-thiadiazol-5-yl)benzenesulfonamide as a beige solid in 63% yield (0.344 g): 1H NMR (300 MHz, CDCl3) δ10.78 (br s, 1H), 8.42 (d, J=1.9 Hz, 1H), 7.94-7.86 (m, 1H), 7.52-7.48 (m, 1H), 7.45-7.37 (m, 1H), 7.29 (dd, J=8.7, 1.6 Hz, 1H), 7.13 (s, 1H), 7.10-6.99 (m, 2H), 6.91 (d, J=8.1 Hz, 1H), 6.25 (s, 2H), 3.31 (s, 3H); 19F NMR (282 MHz, DMSO-d6) δ −108.7 (d, J=15.0 Hz, 1F), −135.1 (d, J=15.1 Hz, 1F); MS (ES+) m/z 548.7 (M+1), 550.7 (M+1).

Provenance & Evidence