反应详情

To a solution of 3-chloro-4-[[(2R)-3,3,3-trifluoro-2-hydroxy-2-methyl-propanoyl]amino]benzenesulfonyl chloride (110 mg, 0.3 mmol) in DCM (5 ml) and pyridine (30 μl, 0.33 mmol) was added DMAP (˜2 mg) followed by 2-aminobenzenesulfonamide (52 mg, 0.3 mmol). The resulting mixture was stirred at RT for 18 h. The solution was concentrated and partitioned between ethyl acetate (6 ml) and 1M HCl (5 ml). The organic layer was separated, washed with saturated NaHCO3, dried (MgSO4) and evaporated to give a gum which was dissolved in a small amount of ethyl acetate and then iso-hexane was added to precipitate the title compound as a solid. LCMS 502.2 (M+H), Rf 7.64 min. [Column: HYPERSIL ODS; Flow Rate: 1.5 ml/min; Detector Wavelength: 254 nm; Solvent A: 0.1% Formic Acid in Water; Solvent B: 0.1% Formic Acid in Acetonitrile; Gradient: 5-95% B]

1. concentrationThe solution was concentrated
2. custompartitioned between ethyl acetate (6 ml) and 1M HCl (5 ml)
3. customThe organic layer was separated
4. washwashed with saturated NaHCO3
5. dry with materialdried (MgSO4)
6. customevaporated
7. customto give a gum which
8. customto precipitate the title compound as a solid