Potassium Carbonate → HCID 90386297, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromo-N-(tert-butyl)-2-hydroxypyridine-3-sulfonamide (2.00 g, 6.47 mmol) in DMF (40 mL) was added 4-methoxybenzyl chloride (1.76 mL, 12.9 mmol) followed by K2CO3 (1.78 g, 12.9 mmol) at ambient temperature. The reaction mixture was heated to 100° C. for 14 h, diluted with cold water (100 mL). The aqueous mixture was extracted with ethyl acetate (2×50 mL). The combined organic layers were dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure to give a residue which was purified by column chromatography using CombiFlash (REDISEP®, silica gel, 40 g, 50% EtOAc/hexanes) to obtain 5-bromo-N-(tert-butyl)-2-((4-methoxybenzyl)oxy)pyridine-3-sulfonamide (1.50 g, 54.0%). LCMS Condition B-39: retention time 2.53 min, [M+1]=429.0. 1H NMR (400 MHz, CDCl3) 1.25 (s, 9H), 3.81 (s, 3H), 6.88-6.91 (m, 2H), 7.24-7.30 (m, 4H), 7.55 (d, J=2.8 Hz, 1H), 8.11 (d, J=2.8 Hz, 1H).

Provenance & Evidence