反应详情

To a degassed toluene (40 mL), 2,4-dibromodibenzofuran-3-amine (1.5 g, 4.4 mmol), benzaldehyde (0.47 g, 4.4 mmol) 4,4,5,5-tetramethyl-2-(2-methylprop-1-enyl)-1,3,2-dioxaborolane (3.2 g, 17.6 mmol), potassium phosphate (6.08 g, 26 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (0.28 g, 0.704 mmol), Pd2(bda)3 (0.161 g, 0176 mmol) and water (6 mL) were sequentially added. The solution was refluxed for overnight in an atmosphere of nitrogen and then allowed to cool to room temperature. The reaction was diluted with ethyl acetate and the organic phase was separated from the aqueous phase. The organic phase was dried over sodium sulfate and the solvent was removed under vacuum. The product was chromatographed using silica gel with ethylacetate and hexanes as the eluent. The solvent was removed to give 1.05 g (82% yield) of title compound.

1. temperatureThe solution was refluxed for overnight in an atmosphere of nitrogen
2. customthe organic phase was separated from the aqueous phase
3. dry with materialThe organic phase was dried over sodium sulfate
4. customthe solvent was removed under vacuum
5. customThe product was chromatographed
6. customThe solvent was removed