反应详情

A mixture of the alcohol prepared above (8.5 g, 43 mmol), 2-bromoethyltetrahydro-2-pyranylether (17.9 g, 86 mmol) and potassium hydroxide (9.6 g, 171 mmol) in dimethylsulfoxide (100 ml) was stirred at ambient temperature for 72 h. An extra batch of 2-bromoethyltetrahydro-2-pyranylether (3.6 g, 17 mmol) was added and the mixture stirred for 48 h at ambient temperature. Water (350 ml) was added and the mixture was extracted with diethylether (2×250 ml). The organic phases were combined, washed with water (100 ml), dried (MgSO4) and concentrated in vacuo. The residue was submitted to column chromatography on silica gel (400 ml) using heptane and ethyl acetate (3:2) as eluent to give 6.6 g of 2-(2-(biphenyl-2-yl)ethoxy)ethanol as an oil.

1. stirringthe mixture stirred for 48 h at ambient temperature
2. extractionthe mixture was extracted with diethylether (2×250 ml)
3. washwashed with water (100 ml)
4. dry with materialdried (MgSO4)
5. concentrationconcentrated in vacuo