反应详情

The Suzuki protocol described for (163) was employed. A round bottom flash was charged with 4-[(4-bromophenyl)(3,3,5,5-tetramethylcyclohexylidene)methyl]phenol (14) (0.200 g, 0.5 mmol), PdCl2(PPh3)2 (0.035 g, 0.05 mmol), (3,5-dimethyl-4-isoxazolyl)boronic acid (0.141 g, 1.0 mmol), aqueous 2 M Na2CO3 (1.0 mL, 0.106 g, 1.0 mmol) solution, and 4:1 THF:H2O mixture (5 mL) under a nitrogen atmosphere. The reaction mixture was refluxed for 3 h. Regular work-up and purification gave 0.172 g (83%) of the title compound (235) as an off-white solid. 1H NMR (400 MHz, DMSO-d6): δ 9.30 (s, 1H), 7.29 (d, J=8.0 Hz, 2H), 7.21 (d, J=8.4 Hz, 2H), 6.94 (d, J=8.4 Hz, 2H), 6.67 (d, J=8.4 Hz, 2H), 2.38 (s, 3H), 2.20 (s, 2H), 1.91 (br s, 4H), 1.25 (s, 2H), 0.892 (s, 6H), 0.88 (s, 6H). LCMS (APCI): m/z 416.10 (M+H)+.

1. temperatureThe reaction mixture was refluxed for 3 h
2. customRegular work-up and purification