The rare example of pyrrolidine C–N bond cleavage in 1-sulfonylpyrrolidines in acidic media in the presence of phenols is reported. The reaction proceeds under mild conditions and provides a convenient route to otherwise hardly accessible and previously unknown dibenzoxanthenes, diarylbutanes, and resorcinarenes having a sulfonylamide moiety.

中文翻译：

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1-磺酰基吡咯烷中酸介导的 C-N 键断裂：通往二苯并氧杂蒽、二芳基甲烷和间苯二酚的有效途径

报道了在酚类存在的酸性介质中 1-磺酰基吡咯烷中吡咯烷 C-N 键断裂的罕见例子。该反应在温和的条件下进行，并提供了一种方便的途径，以其他方式难以获得和以前未知的具有磺酰胺部分的二苯并氧杂蒽、二芳基丁烷和间苯二酚。