反应详情

To a solution of (2,4-dichlorophenyl)-[3-methyl-6-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)-benzofuran-2-yl]-methanone (100 mg, 0.23 mmol) in toluene (4 mL) and ethanol (4 mL) was added 3-bromobenzamide (56 mg, 0.28 mmol) followed by [1,1′-bis(diphenylphosphino)ferrocene]dichloro-palladium (II), complex with dichloromethane (1:1) (17 mg, 0.02 mmol) and 2M aqueous Na2CO3 (0.29 mL, 0.58 mmol). The mixture was degassed under vacuum, then heated to 85 C for 2 h. The reaction mixture was concentrated in vacuo, diluted in methanol, and filtered through a syringe filter. Purification by prep-HPLC provided the desired material as a white solid (41.3 mg, 42%). 1H-NMR (CDCl3) δ 8.02 (t, J=1.9 Hz, 1H), 7.71-7.67 (m, 3H), 7.61 (m, 1H), 7.52 (dd, J=1.4, 8.4 Hz, 1H), 7.46 (t, J=7.7 Hz, 1H), 7.43 (d, J=2.0 Hz, 1H), 7.39 (m, 1H), 7.31 (ddd, J=8.1, 1.9, 0.2 Hz, 1H), 2.54 (s, 3H).

1. customThe mixture was degassed under vacuum
2. temperatureheated to 85 C for 2 h
3. concentrationThe reaction mixture was concentrated in vacuo
4. additiondiluted in methanol
5. filtrationfiltered through a syringe
6. filtrationfilter
7. customPurification