Abstract The phenylseleno radical–catalyzed addition of dimethyl 2‐ethynylcyclopropane‐1,1‐dicarboxylate to electron–rich olefins has been achieved. This radical process leads to formation of highly substituted ethynylcyclopentane products through a [3+2] annulation.

中文翻译：

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2-乙炔基环丙烷-1,1-二羧酸二甲酯与富电子烯烃的自由基加成

摘要 苯硒基催化 2-乙炔基环丙烷-1,1-二羧酸二甲酯与富电子烯烃的加成反应已经实现。这种自由基过程导致通过 [3+2] 环化形成高度取代的乙炔基环戊烷产物。