反应详情

Methanesulfonyl chloride (5 ml, 0.07 mmol) was added dropwise to 6-amino-3-(4-pyridyl)-2-(4-fluorophenyl)-7-aza-indole (17) (20 mg, 0.066 mmol), dimethylamino pyridine (1 mg, 0.007 mmol), and chloroform (3 mL). After 24 h at 23° C., an additional 4 equivalents of methanesulfonyl chloride was added. After 4 h at 23° C., NaOH (10N, 3 mL) was added. After 3 h, the mixture was extracted with ethyl acetate (50 mL), washed with water (3×15 mL), and dried (Na2SO4). After concentration in vacuo, the residue was purified by application of preparative plate chromatography (two 2 mm silica gel plates, ethyl acetate) to afford 6-(methylsulfonyl amino)-3-(4-pyridyl)-2-(4-fluorophenyl)-7-aza-indole (56): Mass Spectrum (CI) 383 (MH+).

1. waitAfter 4 h at 23° C.
2. waitAfter 3 h
3. extractionthe mixture was extracted with ethyl acetate (50 mL)
4. washwashed with water (3×15 mL)
5. dry with materialdried (Na2SO4)
6. concentrationAfter concentration in vacuo
7. customthe residue was purified by application of preparative plate chromatography (two 2 mm silica gel plates, ethyl acetate)