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-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. Upon usual work-up and purification by flash silica gel chromatography provided 0.110 g (76%) of compound 204 as a white solid. 1H NMR (300 MHz, DMSO-d6): δ 9.29 (s, 1H), 8.10 (s, 1H), 7.70 (s, 1H), 7.50 (d, J=6.00 Hz, 2H), 7.11 (d, J=6.00 Hz, 2H), 6.94 (d, J=6.3 Hz, 2H), 6.89 (s, 1H), 6.67 (d, J=6.3 Hz, 2H), 2.19 (br s, 4H), 1.60 (br s, 2H), 1.50-1.45 (m, 8H). LCMS (ESI): m/z 359 (M+H)+.

1. temperatureThe reaction mixture was refluxed for 10 h
2. customUpon usual work-up and purification by flash silica gel chromatography