反应详情

The procedure described for 202 was used. A round-bottomed flask was charged with 4-[(4-bromophenyl)(cyclooctylidene)methyl]phenol (49) (0.150 g, 0.404 mmol), PdCl2(PPh3)2, (0.028 g, 0.40 mmol), (3,5-dimethyl-4-isoxazolyl)boronic acid (0.113 g, 0.80 mmol), Na2CO3 (0.086 g, 0.808 mmol), and THF/H2O (4:1, 5 mL). The reaction mixture was refluxed for 10 h. Standard workup and purification by flash silica gel chromatography provided 0.120 g (77%) of the title compound 205 as an off-white solid. 1H NMR (300 MHz, CDCl3): δ 9.27 (s, 1H), 7.30 (d, J=6.00 Hz, 2H), 7.21 (d, J=6.30 Hz, 2H), 6.96 (d, J=6.0 Hz, 2H), 6.69 (d, J=6.0 Hz, 2H), 2.37 (br s, 3H), 2.19 (s, 7H), 2.60 (br s, 2H), 1.50 (br s, 8H). LCMS (ESI): m/z 386 (M−H)−.

1. temperatureThe reaction mixture was refluxed for 10 h
2. customStandard workup and purification by flash silica gel chromatography