对FeCl3作用下各种炔醇与碘的反应进行了详细研究,结果表明在FeCl3和碘的作用下,炔醇发生分子内碘代环化反应生成碘代环烯醚,产率为63%～90%.在相同的反应条件下,炔丙醇类则生成邻二碘化物,产率为15%～88%.该反应具有操作简单、底物适应广、反应快(3h)和碘用量(0.5equiv.)少等特点,是制备碘代环烯醚和2,3-二碘代烯醇的好方法. The reaction of various acetylenic alcohols with iodine under the action of FeCl3 was studied in detail. The results showed that the iodination of iodols by iodinated iodine occurred in the reaction of FeCl3 and iodine. The yield of iodinated cycloalkenes was 63% 90%. Under the same reaction conditions, propargyl alcohol produced ortho-diiodide in the yield of 15% ~ 88% .The reaction has the advantages of simple operation, wide substrate adaptability, fast reaction (3h) and iodine dosage 0.5 equiv.) Is less, and is a good way to prepare iodocycloalkenes and 2,3-diiodo enol.