反应详情

温度

60 °C

To a stirred solution of N-tert-butyl-2-(1-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (306 mg, 638 μmol) in DMF (15 mL) was added ethylenediamine (1.92 g, 2.15 mL, 31.9 mmol) followed by TBAF (1.91 mL, 1.91 mmol) and the mixture heated at 60° C. under nitrogen for 15 h. The mixture was cooled, diluted with dichloromethane, washed with water and brine, then dried (MgSO4), filtered and concentrated to obtain an oil. This was triturated with water to remove tetrabutylammonium hydroxide, filtered, and the residue purified by chromatography (silica, 5-10% methanol in dichloromethane) to obtain N-tert-butyl-2-(1-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (19.2 mg, 55.0 μmol, 9%) as a light yellow powder. MS (M+H)+=350; 1H NMR (DMSO-d6) δ: 9.12 (s, 1H), 8.84 (dd, J=8.2, 1.6 Hz, 1H), 8.70 (dd, J=4.5, 1.5 Hz, 1H), 8.42 (s, 1H), 7.93 (s, 1H), 7.39 (dd, J=8.0, 4.5 Hz, 1H), 4.22 (s, 3H).

1. temperatureThe mixture was cooled
2. washwashed with water and brine
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customto obtain an oil
7. customThis was triturated with water
8. customto remove tetrabutylammonium hydroxide
9. filtrationfiltered
10. customthe residue purified by chromatography (silica, 5-10% methanol in dichloromethane)