反应详情

To a mixture of 5-bromo-1-(phenylacetyl)-2,3-dihydro-1H-indole (148 mg, 0.467 mmol),bis(pinacolato)diboron (125 mg, 0.491 mmol), and potassium acetate (138 mg, 1.402 mmol) was added 1,4-dioxane (6 mL), and the mixture was degassed with N2 for 10 minutes. PdCl2(dppf)-CH2Cl2 adduct (19.08 mg, 0.023 mmol) was added, and the reaction mixture was stirred for 3 hours at 100 C into a sealed vessel. The reaction was cooled down to room temperature. 3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-amine (100 mg, 0.467 mmol) and sat. aq. NaHCO3 (2 mL) were added, and N2 gas was bubbled through the mixture for 10 minutes. PdCl2(dppf)-CH2Cl2 adduct (19.08 mg, 0.023 mmol) was added, the vessel was sealed, and the reaction mixture was stirred for 3 days at 100 C. The mixture was allowed to cool to room temperature and poured onto water (˜150 mL). The resulting mixture was filtered, and the resulting solid was triturated with EtOAc. To the dark solid in the filter was added a 80:20 mixture of CHCl3:CH3OH (˜7 mL), and the resulting mixture was filtered. The filtrate was injected into a 90 g SiO2 columns. Flash chromatography on SiO2 (gradient: 100% CHCl3 to 90:10:1 CHCl3:CH3OH:NH4OH) provided the title compound. Trituration with Et2O afforded the title compound 3-[1-(phenylacetyl)-2,3-dihydro-1H-indol-5-yl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (35 mg) as a grey solid. 1H NMR (400 MHz, DMSO-d6) 3.24 (t, J=8.34 Hz, 2H), 3.89 (s, 2H), 4.24 (t, J=8.46 Hz, 2H), 7.22-7.40 (m, 6H), 7.44 (d, J=8.34 Hz, 1H), 7.50 (s, 1H), 8.17-8.23 (m, 2H), 13.51 (s, 1H)

1. customthe mixture was degassed with N2 for 10 minutes
2. customN2 gas was bubbled through the mixture for 10 minutes
3. customthe vessel was sealed
4. stirringthe reaction mixture was stirred for 3 days at 100 C
5. temperatureto cool to room temperature
6. additionpoured onto water (˜150 mL)
7. filtrationThe resulting mixture was filtered
8. customthe resulting solid was triturated with EtOAc
9. additionTo the dark solid in the filter was added
10. additiona 80:20 mixture of CHCl3
11. filtrationCH3OH (˜7 mL), and the resulting mixture was filtered