反应详情

(E)-2-(2-bromovinyl)-5-(4-chloro-3-(trifluoromethyl)phenyl)furan (0.501 g, 1.378 mmol) in toluene (2.4 ml) was added to a mixture of copper(I) iodide (0.014 g, 0.069 mmol), potassium carbonate (0.381 g, 2.756 mmol), picolinamide (0.202 g, 1.654 mmol) and N,N′-dimethylethylene diamine (0.0149 ml, 0.0138 mmol) under nitrogen. The reaction mixture was refluxed for 7.5 h and allowed to cool to RT. It was then filtrated through a layer of silica and the filter cake was washed with EtOAc. The filtrate was evaporated to dryness and purified with CombiFlash using heptane-DCM as eluent system affording 0.046 g of the title compound. 1H-NMR (400 MHz; d6-DMSO): δ 6.54 (d, 1H), 6.70 (d, 1H), 7.26 (d, 1H), 7.61-7.70 (m, 2H), 7.77 (d, 1H), 7.99-8.02 (m, 1H), 8.04-8.09 (m, 2H), 8.13 (m, 1H), 8.74 (m, 1H), 11.20 (d, 1H).

1. temperatureThe reaction mixture was refluxed for 7.5 h
2. filtrationIt was then filtrated through a layer of silica
3. washthe filter cake was washed with EtOAc
4. customThe filtrate was evaporated to dryness
5. custompurified with CombiFlash