A facile preparation of benz-annulated heterocycles were achieved at rt involving a Lewis acid/Brönsted acid mediated annulation of heterocycles using 2,5-dimethoxytetrahydrofuran as a four-carbon synthon. The benz-/naphth-annulation was found to be successful with electron-rich arenes as well.
在室温下,使用2,5-
二甲氧基四氢呋喃作为四碳合成子,在
路易斯酸/布朗斯台德酸介导的杂环环化中,实现了苯环式杂环的简便制备。还发现富电子
芳烃也能成功实现苯并/
萘环化。