反应详情

2.6 g of the resulting ether compound, 5.3 g of tri-n-butyl(3-thienyl)tin and 20 mg of tetrakis(triphenhylphosphine)paladium were dissolved in 10 ml of xylene, and the mixture was refluxed for 5.5 hours. A 25% aqueous solution of potassium fluoride was added to the solution, and then the precipitate was removed by filtration. The organic layer separated was worked up in a customary manner, and the product was purified by silica gel column chromatography [hexane/ethyl acetate=20/1→15/1] to give 1.7 g of ethyl 3-(3-thienyl)phenoxyacetate as a white powder.

1. temperaturethe mixture was refluxed for 5.5 hours
2. customthe precipitate was removed by filtration
3. customThe organic layer separated
4. customthe product was purified by silica gel column chromatography [hexane/ethyl acetate=20/1→15/1]