Benzenesulfonyl chloride → 2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(phenylsulfonamido)benzamide

Participants

Reaction Steps

3-Amino-2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)benzamide (0.005 g, 0.0157 mmol) was taken up as a slurry in CHCl3 (1.0 mL). Three drops of pyridine were added, followed by the addition of benzenesulfonyl chloride (0.00600 mL, 0.0470 mmol). The slurry was stirred overnight at room temperature. The reaction mixture was concentrated and purified by silica gel chromatography to provide 2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(phenylsulfonamido)benzamide (5.7 mg, 79%) as a solid. 1H NMR (400 MHz, d6-DMSO) δ 12.59 (s, 1H), 11.01 (s, 1H), 10.39 (br s, 1H), 8.55 (s, 1H), 8.44 (s, 1H), 7.76-7.78 (m, 2H), 7.64-7.68 (m, 1H), 7.57-7.61 (m, 1H), 7.31-7.37 (m, 1H), 7.17-7.21 (m, 1H), 4.01 (s, 3H); m/z (APCI-neg) M−1=458.2.

Provenance & Evidence