Ethanol → 3-Chloro-2,5-di(4-octyloxyphenyl)pyridine

Beteiligte Stoffe

Reaktionsschritte

2.00 g (5.40 mmol) of 5-bromo-3-chloro-2-(4-octyloxyphenyl)pyridine, 1.50 g (6.00 mmol) of 4-octyloxybenzeneboronic acid, 0.07 g (0.6 mmol) of tetrakis(triphenylphosphine)palladium(0) and 1.3 g (12.00 mmol) of sodium carbonate are heated at 80° C. for 3 hours in 20 ml of toluene, 10 ml of ethanol and 10 ml of water. The mixture is subsequently partitioned between aqueous sodium chloride solution and ether, the organic phase is washed with aqueous sodium chloride solution, dried over sodium sulfate and evaporated, and the product is purified by chromatography (silica gel/dichloromethane), giving 1.38 g of 3-chloro-2,5-di(4-octyloxyphenyl)pyridine. ##STR24##

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