反应详情

温度

0 °C

To a solution of 3-(4-fluorobenzoyl)-1-hydroxy-1,2,3,6-tetrahydroazepino[4,5-b]indole-5-carboxylic acid ethyl ester (60 mg, 0.3 mmol) in DCM (2 mL) was added trifluoromethanesulfonic anhydride (50 mL, 0.6 mmol) at 0° C. and the mixture was stirred for 1 hour at 0° C. Ethanethiol (34 mL, 0.9 mmol) was added and the reaction mixture was stirred overnight at 20° C. Water was added and organic layer was separated. The aqueous layer was extracted with DCM. The combined organic layer was then washed with water and dried over MgSO4. Evaporation of solvent gave a crude product, which was purified by column chromatography on silica gel, eluted with MeOH-DCM (1:19) to give the title compound (2 mg); 1NMR (CDCl3): δ 8.59 (1H, s), 8.77 (1H, d), 7.54 (2H, m), 7.36 (1H, ), 7.19 (1H, m), 7.06 (2H, m), 6.73 (1H, s), 4.41 (2H, m), 4.21-4.30 (3H, m), 2.59-2.69 (2H, m), 1.28 (3H, t), 1.19 (3H, t). MS (ES): 439 (MH+).

1. stirringthe reaction mixture was stirred overnight at 20° C
2. customorganic layer was separated
3. extractionThe aqueous layer was extracted with DCM
4. washThe combined organic layer was then washed with water
5. dry with materialdried over MgSO4
6. customEvaporation of solvent
7. customgave a crude product, which
8. customwas purified by column chromatography on silica gel
9. washeluted with MeOH-DCM (1:19)