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Gold-Catalyzed Cyclization of Alkyne Alcohols: Regioselective Construction of Functionalized 6,6- and 6,7-Bicyclic Ethers

机译:金催化的炔醇的环化:功能化的6,6-和6,7-双环醚的区域选择性构造。

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摘要

We describe an efficient regioselective formation of six-/seven-membered cyclic ethers based on gold-catalyzed intramolecular hydroalkoxylation. Sequential gold-catalyzed cyclization and palladium-catalyzed cross-coupling reactions afforded 6,6-bicyclic ethers, while reversing the reaction sequence (cross-coupling then cyclization) afforded 6,7-bicyclic ethers. This methodology should provide access to a range of functional polycyclic ethers.
机译:我们描述了基于金催化的分子内氢烷氧基化的六/七元环醚的有效区域选择性形成。顺序的金催化的环化和钯催化的交叉偶联反应得到6,6-双环醚,同时逆转反应顺序(交叉偶联然后环化)得到6,7-双环醚。该方法学应该提供对一系列功能性多环醚的访问。

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