Synthesis of Benzofuran Derivates via a Gold-Catalyzed Claisen Rearrangement Cascade
作者:Yankun Li、Chen-Ho Tung、Zhenghu Xu
DOI:10.1021/acs.orglett.2c02388
日期:2022.8.12
A novel method toward a facile synthesis of diverse benzofuran derivates from easily obtained quinols and alkynyl esters has been reported. A gold-catalyzed intermolecular alkoxylation/Claisen rearrangement/condensation cascade was involved. The introduction of difluorodiphenylsilane as a water-trapping reagent in the reaction leads to a higher yield.
已经报道了一种从容易获得的喹啉和炔基酯轻松合成各种苯并呋喃衍生物的新方法。涉及金催化的分子间烷氧基化/克莱森重排/缩合级联。在反应中引入二氟二苯基硅烷作为捕水剂会导致更高的产率。