Synthesis of 2,3‐disubstituted Benzofuran via HNTf
<sub>2</sub>
/TMSOTf Catalyzed Intermolecular Reaction of
<i>o‐</i>
alkenyl phenols and Aldehydes
作者:Jingyao Tan、Rui Wang、Li Xu、Wenli Wu、Meijia Deng、Wanhong Yuan、Li Li、Zhihua Lin
DOI:10.1002/adsc.202300123
日期:——
The synthetic methods of 2,3-disubstituted benzofurans have been widely studied, however, the maneuvers of using o-alkenyl phenols as starting materials are less explored. Herein, we report a general and efficient strategy via HNTf2/TMSOTf catalyzed cascade reaction with readily available o-alkenyl phenols and aldehydes as starting materials, which provides 2,3-disubstituted benzofuran derivatives
2,3-二取代苯并呋喃的合成方法已被广泛研究,然而,使用邻烯基苯酚作为起始原料的方法研究较少。在此,我们报告了一种通用且有效的策略,通过 HNTf 2 /TMSOTf 催化的级联反应,以现成的邻烯基酚和醛作为起始原料,以中等至良好的收率提供 2,3-二取代的苯并呋喃衍生物。该方法无金属环境,底物适用范围广,反应条件温和,规模制备容易。