Highly regioselective synthesis of cyclic enol silyl ethers using ring-closing metathesis
作者:Akihiro Okada、Takashi Ohshima、Masakatsu Shibasaki
DOI:10.1016/s0040-4039(01)01713-0
日期:2001.11
highly regioselective synthesis of cyclic enol ethers from readily accessible acyclic alkenyl ketones or acyclic alkenyl silyl esters using ring-closing metathesis (RCM). The RCM of acyclic enol silyl ethers was examined using Tebbe reagent 5 or Grubbs catalyst 6 or 7 and successfully proceeded using the second generation Grubbs catalyst 7 to afford the corresponding cyclic enol ethers in high yield (up
我们使用闭环复分解(RCM),从易于获得的无环烯基酮或无环烯基甲硅烷基酯开发了第一个高度区域选择性的环状烯醇醚合成方法。使用Tebbe试剂5或Grubbs催化剂6或7检查了无环烯醇甲硅烷基醚的RCM,并成功地使用第二代Grubbs催化剂7进行了操作,以高收率得到了相应的环状烯醇醚(高达99%,距离烯基酮的两个步骤)。该方法可以以高度区域选择性的方式应用于多种环状烯醇醚的合成。