An efficient, high-yielding and scalable procedure for the regioselective 3-acylation of indoles with anhydrides promoted by boron trifluoride etherate under mild conditions was reported. This novel protocol provided a simple way to prepare 3-(benzofuran-2-yl) indole in three steps.
报道了一种高效、高产且可扩展的程序,用于在温和条件下通过
乙醚三氟化硼促进
吲哚与酸酐的区域选择性 3-酰化。这种新颖的方案提供了一种分三步制备 3-(benzofuran-2-yl)
吲哚的简单方法。