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Synthesis of Benzofuran Derivates via a Gold-Catalyzed Claisen Rearrangement Cascade. 2022

Yankun Li, and Chen-Ho Tung, and Zhenghu Xu
Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University, No. 27 Shanda South Road, Jinan 250100, China.

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.

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