Triethylamine → HCID 86615459, compound

To a stirred solution of 3′-[4-trifluoromethyl-6-(4-trifluoromethyl-phenyl)-pyrimidin-2-yl]-biphenyl-3-ylamine (example 220) (0.46 g, 1.0 mmol) in dichloromethane (10 mL) was added triethylamine (0.42 mL) and N-Boc-sulfamoyl chloride (0.8M, 3.75 mL, 3.0 mmol), the reaction mixture was allowed to stir at room temperature for 45 h, poured into ice-water (20 mL) and extracted with ethyl acetate (2×30 mL). The combined organic layers were washed with brine (30 mL), dried (MgSO4) and evaporated. Further purification by flash chromatography on silica gel (ethyl acetate/heptane) and crystallization (dichloromethane/MeOH/hexane) yielded a white solid (0.3 g), which was dissolved in TFA (10 mL) and allowed to stir at room temperature for 15 h. The mixture was evaporated to dryness and saturated NaHCO3 solution (10 mL) was added. The mixture was stirred at room temperature for 30 min, the precipitate was collected by filtration and washed with water. The crude product was further purified by crystallization (dichloromethane/MeOH/hexane) to yield the title compound as a white solid (0.21 g, 39%). MS (ISP) 539.3 [(M+H)+]; mp 174° C.