反应详情

80 mg (0.22 mmol) 2-(1-(4-chlorobenzoyl)-5-methoxy-1H-indol-3-yl)acetyl chloride and 49.4 mg (0.33 mmol) trifluoromethanesulfonamide were dissolved in 1.8 mL 1,2-dichloro ethane (or CH2Cl2) under stirring. Then 17.5 mg (0.22 mmol) pyridine were added and the reaction was allowed to run at ambient temperature until the starting material was consumed (˜4 h). After the addition of 13 μL of AcOH the organic solution was washed with H2O (3×2 mL), dried over Na2SO4, filtered and the concentrated in vacuo. The crude product was purified by flash chromatography (SiO2, ethyl acetate/hexane, 0.5% AcOH gradient) to afford the title compound in 70% yield (73 mg). C19H14ClF3N2O5S, Mr=474.84; 1H NMR (400 MHz, DMSO-d6) d: 3.44 (s, 2H), 3.79 (s, 3H), 6.95 (dd, J=2.6/9.0 Hz, 1H), 7.14 9d, J=2.4 Hz, 1H), 7.23 (s, 1H), 7.64-7.66 (m, 2H), 7.72-7.74 (m, 2H), 8.15 (d, J=8.8 Hz, 1H, C7′-H); 19F NMR (282 MHz, DMSO-d6) d: −75.58 (s, —CF3); LCMS (ESI) tR: 2.37 min (>99%, UV254, ELSD), m/z: 475.0 [M+1]+.

1. customto run at ambient temperature until the starting material
2. customwas consumed (˜4 h)
3. additionAfter the addition of 13 μL of AcOH the organic solution
4. washwas washed with H2O (3×2 mL)
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationthe concentrated in vacuo
8. customThe crude product was purified by flash chromatography (SiO2, ethyl acetate/hexane, 0.5% AcOH gradient)