反应详情

Tetrakis(triphenylphosphine)palladium (0) (0.30 g, 0.26 mmol) and p-n-octylphenylboronic acid (1.0 g, 4.3 mmol) were sequentially added to a stirred solution of 4-nitroiodobenzene (0.87 g, 3.5 mmol) in 1,2-dimethoxyethane (13 mL) and aqueous sodium carbonate (2 M, 13 mL) under dry nitrogen. The stirred mixture was heated under reflux overnight and cooled. Water was added and the product was extracted into ether (30 3 mL) and the combined ethereal extracts were washed with brine and dried with MgSO4. The solvent was removed in vacuo and the residue was purified by chromatography using a short silica gel column (hexane:ethyl acetate—5:1 to 2:1] to provide 4′-nitro-4-n-octyl-biphenyl as a yellow oil, which solidified upon standing (1.04 g, 95% yield). The solid was used without further purification.

1. temperatureThe stirred mixture was heated
2. temperatureunder reflux overnight
3. temperaturecooled
4. extractionthe product was extracted into ether (30 3 mL)
5. washthe combined ethereal extracts were washed with brine
6. dry with materialdried with MgSO4
7. customThe solvent was removed in vacuo
8. customthe residue was purified by chromatography