Herein, we describe a gold(I)-catalyzed generation of nonclassical gold-containing 1,4-all-carbon dipoles from cycloisomerization/1,2-carbene transfer/ring opening cascade reactions of readily accessible allenyl ketones bearing a cyclopropyl moiety and its cyclization with tropone. This method features an unprecedented formal [8+4] high-order cycloaddition under mild conditions for delivering structurally complex 7,7,5-tricycles in generally moderate to high yields.

中文翻译：

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金（I）催化的1,4-全碳偶极子与[tropone]的[8 + 4]环加成反应

在这里，我们描述了由环丙基/ 1,2-卡宾转移/开环级联反应容易得到的带有环丙基部分的烯基酮的金（I）催化生成的非经典含金1,4-全碳偶极子及其环托洛酮环化。该方法的特点是在温和条件下以前所未有的形式[8 + 4]高阶环加成反应，以通常中等至高收率的方式输送结构复杂的7,7,5-三环。