Re(I)-Catalyzed Hydropropargylation of Silyl Enol Ethers Utilizing Dynamic Interconversion of Vinylidene–Alkenylmetal Intermediates via 1,5-Hydride Transfer

Re­(I)-catalyzed hydropropargylation reaction of silyl enol ethers was realized utilizing dynamic interconversion of vinylidene–alkenylmetal intermediates, where alkenylmetals underwent 1,5-hydride transfer of the α-hydrogen to generate vinylidene intermediates. Furthermore, this process was found to be in an equilibrium.

本研究成功实现了硅烯醇醚（silyl enol ethers）在铼(I)（Re(I)）催化下的氢丙炔基化反应，该反应依托亚乙烯基-烯基金属中间体的动态互变过程完成：烯基金属中间体的α-氢发生1,5-氢迁移（1,5-hydride transfer），以此生成亚乙烯基中间体。进一步研究发现，该反应过程处于动态平衡状态。