反应详情

温度

130 °C

554 mg (2.469 mmol) of Pd(OAc)2, 2.70 g (7.41 mmol) of dicyclohexyl(2′-methylbuphenyl-2-yl)phosphine, 35 g (82 mmol) of 1-bromo-4-{difluoro[4-(4,4,4-trifluorobutoxy)phenoxy]-methyl}benzene, 17.2 ml (123 mmol) of triethylamine and 14.84 ml (165 mmol) of methyl acrylate are solubilised in 500 ml of DMF and heated to 130° C. After 2 hours, the solution is diluted to room temperature and diluted with 500 ml of TBME. The solution is filtrated over a plug of Hyflo. The organic phase is washed repeatedly with water, dried over sodium sulfate, filtrated and concentrated under reduced pressure. Crystallisation from toluene/heptane mixture yields 23 g of methyl (2E)-3-(4-{difluoro[4-(4,4,4-trifluorobutoxy)phenoxy]-methyl}-phenyl)prop-2-enoate.

1. additionthe solution is diluted to room temperature
2. filtrationThe solution is filtrated over a plug of Hyflo
3. washThe organic phase is washed repeatedly with water
4. dry with materialdried over sodium sulfate
5. filtrationfiltrated
6. concentrationconcentrated under reduced pressure
7. customCrystallisation from toluene/heptane mixture