A copper-catalyzed four-component cascade annulation is realized to access novel sulfonyl-functionalized quinone-fused cyclopenta[b]indoles with high step economy and broad substrate scope, and 34 examples are constructed in one pot with up to 88% yield. This process includes sulfonyl radical triggered tandem cyclization by selective 1,1,2-trifunctionalization of terminal acetylene.

中文翻译：

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铜 （II） 催化通过四组分级级环环环戊 [b] 吲哚合成


实现了铜催化的四组分级联环化，以获得新型磺酰官能化醌熔合环戊[b]吲哚，具有高步骤经济性和广泛的衬底范围，并在一个罐中构建了 34 个实例，产率高达 88%。该过程包括通过末端乙炔的选择性 1,1,2-三官能化实现磺酰自由基触发的串联环化。