Oxidative Substitution Reactions of Organostannyl Compounds with Lead Tetraacetate. A Convenient Route to 5-Alkylidene-2(5<i>H</i>)-furanones
作者:Makoto Yamamoto、Hiroshi Munakata、Keiki Kishikawa、Shigeo Kohmoto、Kazutoshi Yamada
DOI:10.1246/bcsj.65.2366
日期:1992.9
5-Substituted 2-tributylstannylfurans which were synthesized by the reaction of corresponding 5-substituted 2-lithiofurans with tributylstannyl chloride, were treated with two equimolar amounts of lead tetraacetate at room temperature to give corresponding 5-substituted 5-acetoxy-2(5H)-furanones in good yields. The 5-acetoxy-2(5H)-furanone was heated at 80 °C in acetic acid-acetic anhydride containing
将相应的 5-取代的 2-硫代呋喃与氯化三丁基甲锡基反应合成的 5-取代的 2-三丁基甲锡基呋喃在室温下用 2 等摩尔量的四乙酸铅处理,得到相应的 5-取代的 5-乙酰氧基-2(5H) - 呋喃酮收率良好。将 5-乙酰氧基-2(5H)-呋喃酮在含有催化量浓硫酸的乙酸-乙酸酐中于 80°C 加热,以中等产率得到 5-亚烷基-2(5H)-呋喃酮。