Metal- and light-free approach to polyheterocycles via a quinone-Cs2CO3 couple promoted regioselective cascade radical cyclization

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Abstract

A highly efficient, transition-metal- and light-free approach to polyheterocycles via regioselective cascade radical cyclization is developed. The redox-neutral protocol has a broad substrate scope with good functional group tolerance and probably undergoes a SET process, which is initiated by catalytic amounts of quinone in combination with 2.0 equiv. of Cs2CO3.

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通过醌-铯-Cs2CO3偶联物促进区域选择性级联自由基环化的无金属、无光多杂环方法
通过区域选择性级联自由基环化,开发出一种高效、无过渡金属和光的多杂环方法。该氧化还原中性方案具有广泛的底物范围和良好的官能团耐受性,并可能经历一个 SET 过程,该过程由催化量的醌与 2.0 等量的 Cs2CO3 共同启动。
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