作者:Shouzhi Zhang、Ruyu Xie、Aijie Tang、Panpan Chen、Zhiqiang Zhao、Maozhong Miao、Hongjun Ren
DOI:10.1021/acs.orglett.0c00810
日期:2020.4.17
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
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。