Water → 1-(Benzofuran-6-yl)ethanone

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To a solution of a mixture of 6-bromobenzofuran and 7-bromobenzofuran (1.12 g, 5.68 mmol) in toluene (19 mL), tetrakistriphenyl phosphine palladium (650 mg, 0.57 mmol) and tributyl(1-ethoxyvinyl)tin (2.11 mL, 6.25 mmol) were added, and the mixture was stirred at 100° C. overnight. The reaction solution was added water at room temperature, and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, concentrated in vacuo, and purified by silica-gel column chromatography (hexane). The title compound (280 mg) was obtained as a yellow crystal.

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