Three different reactions were explored leading to the synthesis of various benzofurans. All reactions took place under AcOH catalysis in a one-pot manner. As a result, benzoquinone derivatives underwent heteroannulation with either itself or cyclohexanones to produce furanylidene-benzofuran or benzofuran structures, respectively.

中文翻译：

---

通过苯醌杂环一锅合成苯并呋喃

探索了三种不同的反应，导致了各种苯并呋喃的合成。所有反应均在AcOH催化下以一锅法进行。结果，苯醌衍生物本身或与环己酮进行异环化反应，分别制得呋喃基-苯并呋喃或苯并呋喃结构。