Synthesis of cyclic ethers from copper carbenoids by formation and rearrangement of oxonium ylides
作者:J. Stephen Clark、Steven A. Krowiak、Leslie J. Street
DOI:10.1016/s0040-4039(00)79359-2
日期:1993.7
Copper carbenoids undergo efficient intramolecular insertion into allyl ethers, and the resulting ylide-type species rearrange to furnish cyclic ethers (ring sizes 6–8) in high yield. Copper(II) hexafluoroacetylacetonate is an extremely efficient catalyst for this reaction, and use of this complex minimises competing C-H insertion.
类铜铜经过分子内有效插入烯丙基醚中,产生的叶立德型物质重新排列,以高收率提供环状醚(环尺寸为6-8)。六氟乙酰丙酮铜(II)是该反应的极有效催化剂,使用该配合物可最大程度地减少竞争性的CH插入。