反应详情

A solution of Example 31B (4.95 g, 10.4 mmol), 4′-cyanobiphenyl triflate (3.1 g, 9.48 mmol, prepared from 4′-hydroxybiphenyl-4-carbonitrile by standard methods), and Pd(PPh3)2Cl2 (0.332 g, 0.47 mmol) in DMF (20 mL) was stirred at 80° C. overnight. The mixture was cooled to room temperature and partitioned between ethyl acetate and water. The organic layer was dried (MgSO4) and filtered. The filtrate was concentrated under reduced pressure and the residue was purified by column chromatography (97.5:2.5 hexane/ethyl acetate) to provide the title compound. 1H NMR (300 MHz, CDCl3): δ 0.07 (s, 6H), 0.91 (s, 9H), 2.46 (q, J=6 Hz, 2H), 3.75 (t, J=6 Hz, 2H), 6.32 (d, J=16 Hz, 1H), 6.48 (d, J=16 Hz, 1H), 7.44 (d, J=9 Hz, 2H), 7.54 (d, J=9 Hz, 2H), 7.65-7.74 (m, 4H). MS (DCl—NH3) m/z 364 (M+H)+, m/z 359 (M+NH4)+.

1. custompartitioned between ethyl acetate and water
2. dry with materialThe organic layer was dried (MgSO4)
3. filtrationfiltered
4. concentrationThe filtrate was concentrated under reduced pressure
5. customthe residue was purified by column chromatography (97.5:2.5 hexane/ethyl acetate)