反应详情

The procedure described for 202 was employed. A round-boltomed 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), 2-furanylboronic acid (0.090 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 110 mg (76%) of the title compound 203 as a white solid. 1H NMR (300 MHz, DMSO-d6): δ 9.27 (s, 1H), 7.70 (d, J=0.9 Hz, 1H), 7.59 (d, J=6.0 Hz, 2H), 7.15 (d, J=6.3 Hz, 2H), 6.94 (d, J=6.6 Hz, 2H), 6.86 (d, J=2.4 Hz, 1H), 6.67 (d, J=6.3 Hz, 1H), 6.55 and 6.54 (dd, J1=2.4 Hz, J2=1.2 Hz, 1H), 2.48-2.47 (m, 4H), 1.60 (br s, 2H), 1.50-1.45 (m, 8H), 2.37 (br s, 4H), 1.62 (br s, 8H). LCMS (ESI): m/z 357 (M−H)−.

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