反应详情

温度

85 °C

A flask was charged with 7-iodo-1-methyl-6-tosyl-1,6-dihydropyrazolo[3,4-d]pyrrolo[2,3-b]pyridine (0.80 g, 1.76 mmol, Preparation #1), tert-butyl 5-methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylate (0.792 g, 2.12 mmol, prepared using H from tert-butyl 3-bromo-5-methoxy-1H-indole-1-carboxylate (SynChem) with 4,4,5,5-tetramethyl-1,3,2-dioxaborolane), Cs2CO3 (1.44 g, 4.42 mmol), PdCl2(PPh3)2 (0.074 g, 0.106 mmol), water (2.6 mL) and 1,4-dioxane (8.0 mL). The mixture was heated to about 85° C. for about 2 h and then cooled to rt. The mixture was diluted with DCM (60 mL) and washed with water (30 mL). The organic layer was dried over anhydrous MgSO4, filtered and concentrated in vacuo. The crude material was purified by silica gel chromatography eluting with a gradient of 0 to 20% EtOAc/DCM to afford tert-butyl 5-methoxy-3-(1-methyl-6-tosyl-1,6-dihydropyrazolo[3,4-d]pyrrolo[2,3-b]pyridin-7-yl)-1H-indole-1-carboxylate (1.01 g, 100%): LC/MS (Table 2, Method c) Rt=1.71 min; MS m/z 572 (M+H)+.

1. temperaturecooled to rt
2. washwashed with water (30 mL)
3. dry with materialThe organic layer was dried over anhydrous MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe crude material was purified by silica gel chromatography
7. washeluting with a gradient of 0 to 20% EtOAc/DCM