反应详情

3.16 g (9.86 mmol) of 5-bromo-3-chloro-2-octyloxypyridine, 2.47 g (9.86 mmol) of 4-octyloxybenzeneboronic acid, 0.11 g (0.10 mmol) of tetrakis(triphenylphosphine)-palladium(0) and 2.09 g (19.72 mmol) of sodium carbonate are heated at 80° C. for 3 hours in 90 ml of toluene, 60 ml of ethanol and 30 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/hexane:ethyl acetate 9:1), giving 2.85 g of 3-chloro-2-octyloxy-5-(4-octyloxyphenyl)pyridine. ##STR22##

1. customThe mixture is subsequently partitioned between aqueous sodium chloride solution and ether
2. washthe organic phase is washed with aqueous sodium chloride solution
3. dry with materialdried over sodium sulfate
4. customevaporated
5. customthe product is purified by chromatography (silica gel/hexane:ethyl acetate 9:1)