反应详情

A mixture of methyl 4-bromo-3-(trifluoromethyl)benzoate (6 g; 21.2 mmol; 1 eq.), o-tolylboronic acid (3.17 g; 23.3 mmol; 1.1 eq.), potassium carbonate (14.65 g; 106 mmol; 5 eq.) and Pd(PPh3)4 (2.45 g; 2.12 mmol; 0.1 eq.) in toluene (30 mL) and water (30 mL) was refluxed for 3 hours. After cooling to room temperature, the reaction mixture was filtered through a pad of CELITE which was further washed with toluene (20 mL). The filtrate was concentrated in vacuo, the residue taken up in ethyl acetate (200 mL) and washed with sat. aq. NaHCO3 (100 mL), water (100 mL) and brine (100 mL), dried over magnesium sulphate and concentrated in vacuo to afford the title compound (5 g, 80%) as a brown oil.

1. temperaturewas refluxed for 3 hours
2. filtrationthe reaction mixture was filtered through a pad of CELITE which
3. washwas further washed with toluene (20 mL)
4. concentrationThe filtrate was concentrated in vacuo
5. washwashed with sat. aq. NaHCO3 (100 mL), water (100 mL) and brine (100 mL)
6. dry with materialdried over magnesium sulphate
7. concentrationconcentrated in vacuo