In this work, we have demonstrated a metal-free transformation of cyclopropane carbaldehydes to oxybis(2-aryltetrahydrofuran) derivatives via a domino Cloke-Wilson rearrangement-hydration-dimerization sequence. Commercially inexpensive p-toluene sulfonic acid (PTSA) was used as a Brønsted acid catalyst, and reactions were conducted in an open-flask. Detection of reaction intermediates were carried to get an insight into the reaction pathway.

中文翻译：

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环丙烷甲醛的无金属多米诺骨牌Cloke-Wilson重排-水合-二聚：轻松获得Oxybis（2-aryltetrahydrofuran）衍生物

在这项工作中，我们已经证明了通过多米诺克Cloke-Wilson重排-水合-二聚序列将环丙烷甲醛无金属转化为双（2-芳基四氢呋喃）衍生物。商业上便宜的对甲苯磺酸（PTSA）被用作布朗斯台德酸催化剂，并且反应在开瓶中进行。进行反应中间体的检测以深入了解反应途径。