反应详情

A mixture of 4-bromo-3,N,N-trimethyl-benzamide (798 mg, 3.30 mmol), potassium vinyltrifluoroborate (579 mg, 4.32 mmol), PdCl2 (59.0 mg, 0.333 mmol), PPh3 (265 mg, 1.01 mmol) and Cs2CO3 (3.22 g, 9.90 mmol) in THF (6.5 ml)-H2O (0.65 ml) was heated with stirring at 85° C. for 21 hours in a sealed test tube in an N2 atmosphere. The reaction mixture was cooled to room temperature and then extracted with ether. The organic layer was washed with water, and then dried over MgSO4 and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate=2/1) to give 3,N,N-trimethyl-4-vinyl-benzamide (565 mg, 90%).

1. temperaturewas heated
2. extractionextracted with ether
3. washThe organic layer was washed with water
4. dry with materialdried over MgSO4
5. concentrationconcentrated under reduced pressure
6. customThe resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate=2/1)