反应详情

A mixture of 1-benzyl-2-bromo-5-chloro-1H-pyrrolo[3,2-b]pyridine (0.120 g, 0.373 mmol, from Example 62, Step 2), 1-(tetrahydro-2H-pyran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.11 g, 0.41 mmol, Aldrich) and Na2CO3 (0.20 g, 1.9 mmol) in 1,2-dimethoxyethane (4 mL) and water (0.7 mL) was degassed by a stream of nitrogen through the solution for 10 minutes. Tetrakis(triphenylphosphine)palladium(0) (0.043 g, 0.037 mmol) was added, and the reaction was heated to reflux for 1.5 hours. Upon cooling to room temperature, the mixture was partitioned between water and EtOAc, and the aqueous layer was extracted a total of three times. The combined extracts were dried over sodium sulfate, filtered and concentrated. Flash chromatography, eluting with a gradient from 0-50% EtOAc in hexanes afforded product. Yield: (0.106 g, 72%).

1. customwas degassed by a stream of nitrogen through the solution for 10 minutes
2. temperaturethe reaction was heated
3. temperatureto reflux for 1.5 hours
4. customthe mixture was partitioned between water and EtOAc
5. extractionthe aqueous layer was extracted a total of three times
6. dry with materialThe combined extracts were dried over sodium sulfate
7. filtrationfiltered
8. concentrationconcentrated
9. washFlash chromatography, eluting with a gradient from 0-50% EtOAc in hexanes afforded product