反应详情

温度

60 °C

5-Iodo-1H-pyrrolo[2,3-b]pyridine (24, 0.303 g, 1.22 mmol), (trimethylsilyl)acetylene (25, 0.210 mL, 1.46 mmol), bis(triphenylphosphine)palladium(II) chloride (0.039 g, 0.055 mmol), and copper(I) iodide (0.0019 g, 0.010 mmol) were dissolved in triethylamine (19 mL, 0.14 mol) under an atmosphere of nitrogen. The resulting mixture was heated to 60° C. and stirred under an atmosphere of nitrogen for 16 hours. The triethylamine was removed under vacuum, 30 mL of water was added to the residue, and it was extracted with 2×20 mL with ether. The combined organic layers were washed with brine and dried over sodium sulfate. Solids were filtered out and the filtrate was concentrated under vacuum. The crude material was purified by silica gel flash chromatography, eluting with ethyl acetate and dichloromethane. The appropriate fractions were combined and the solvents removed under vacuum to provide the desired compound as a solid (26, 0.237 g). MS (ESI) [M+H+]+=215.3.

1. customThe triethylamine was removed under vacuum, 30 mL of water
2. additionwas added to the residue, and it
3. extractionwas extracted with 2×20 mL with ether
4. washThe combined organic layers were washed with brine
5. dry with materialdried over sodium sulfate
6. filtrationSolids were filtered out
7. concentrationthe filtrate was concentrated under vacuum
8. customThe crude material was purified by silica gel flash chromatography
9. washeluting with ethyl acetate and dichloromethane
10. customthe solvents removed under vacuum