Acetic acid, 2-(triphenylphosphoranylidene)-, ethyl ester → 3-(2-Ethoxycarbonylethenyl)-2-methyl-7-nitrobenzo[b]furan

関与物質

反応手順

A solution of 3-formyl-2-methyl-7-nitrobenzo[b]furan (200 mg) and (carboethoxymethylene)triphenylphosphorane (434 mg) in dioxane (3 ml) was stirred at ambient temperature for 1 hour. The reaction mixture was concentrated in vacuo and the residue was purified by column chromatography on silica gel. The obtained oil was crystallized from diisopropyl ether to give 3-(2-ethoxycarbonylethenyl)-2-methyl-7-nitrobenzo[b]furan (226 mg).

情報源と証拠