反应详情

温度

60 °C

To 3.3 mmol 2-hydroxy-5-methylsulfamoyl-benzoic acid methyl ester (example B13c)) and 3.3 mmol potassium carbonate in 50 ml acetone was added dropwise 4.9 mmol 2,2,2-trifluoro-ethyl trifluoromethanesulfonate and the mixture was heated at 60° C. for 16 h. The mixture was then concentrated in vacuo. The residue was suspended in dichloromethane and filtered. The filtrate was concentrated in vacuo and the residue was chromatographed on silica gel (eluant: ethyl acetate/heptane 3:7) to afford the title compound. MS (m/e): 328.0 (M+H+, 100%)

1. concentrationThe mixture was then concentrated in vacuo
2. filtrationfiltered
3. concentrationThe filtrate was concentrated in vacuo
4. customthe residue was chromatographed on silica gel (eluant: ethyl acetate/heptane 3:7)