Pyridine → N-{5-[5-(2-Chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}-2,6-difluorobenzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-[5-(2-chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluoroaniline (13 g, 36 mmol) in DCM (100 mL) was added pyridine (8.5 g, 107 mmol). The mixture was cooled to 0° C. 2,6-Difluorobenzene-1-sulfonyl chloride (9.1 g, 43 mmol) in DCM (20 mL) was added dropwise to the mixture. The reaction was stirred at rt over night. Then the reaction was washed with water (100 mL), and extracted with DCM (2×200 mL). The organic layer was washed with brine, dried over anhydrous NaSO4, filtrated and concentrated under reduced pressure to give the crude product, which was purified by column chromatography on silica gel (petroleum ether:DCM 1:2) to afford the title compound (12 g, 62.2% yield, two batches combined). 1H NMR (400 MHz, DMSO-d6) δ ppm 10.95-11.05 (br, 1H), 8.54 (d, J=5.2 Hz, 1H), 7.67-7.79 (m, 1H), 7.45-7.50 (m, 2H), 7.22-7.37 (m, 3H), 7.10 (d, J=5.2 Hz, 1H), 1.42 (s, 9H). MS (ES+): 539 [M+H]+.

Provenance & Evidence