反应详情

温度

80 °C

The compound of example 669 (7 g, 32.25 mmol), 4,4,5,5-tetramethyl-2-(4-nitrophenyl)-1,3,2-dioxaborolane (9.63 g, 38.70 mmol) and [1,1-Bis(diphenylphosphino)-ferrocine]dichloropalladium(II), complex with dichloromethane (789 mg, 0.967 mmol) were taken in dry DMF under Argon atmosphere. Degassed 2M solution of sodium carbonate (8.54 g, 80.62 mmol) was added and the reaction mixture was heated to 80° C. for 3 h. The reaction mixture was cooled and the solvent was removed by distillation. The residue was taken in water and the aqueous mixture was extracted with ethyl acetate. The crude material obtained was purified using column chromatography (silicagel, 30% dichloromethane in petroleum ether) to afford the title compound.

1. additionwas added
2. temperatureThe reaction mixture was cooled
3. customthe solvent was removed by distillation
4. extractionthe aqueous mixture was extracted with ethyl acetate
5. customThe crude material obtained
6. customwas purified