A simple and practical method for the synthesis of spirodihydrocarboline derivatives from indolyl alcohol derivatives with enaminones via an iodine-catalyzed cascade formal [3 + 3] cycloaddition reaction has been developed. The reaction afforded the desired products under mild conditions in moderate to good yields with excellent regioselectivities.

中文翻译：

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碘催化吲哚醇衍生物与烯胺酮的级联式[3 + 3]环加成反应：功能化螺二烃基化合物的构建

开发了一种简单实用的方法，该方法通过碘催化的级联[3 + 3]环加成反应，从吲哚醇衍生物与烯胺酮合成螺二烃代衍生物。该反应在温和条件下以中等至良好的产率提供了所需的产物，具有优异的区域选择性。