A Novel, Chemoselective and Efficient Microwave-Assisted Deprotection of Silyl Ethers with Selectfluor
作者:Syed Tasadaque A. Shah、Surendra Singh、Patrick J. Guiry
DOI:10.1021/jo802494t
日期:2009.3.6
efficient method for the cleavage of silyl ethers (aliphatic and aromatic) catalyzed by Selectfluor is reported. A wide range of TBS-, TIPS-, and TBDPS-protected alkyl silyl ethers can be chemoselectively cleaved in high yield in the presence of aryl silyl ethers. The chemoselective deprotection of phenolic TBS ethers, and not the TIPS- or TBDPS-protected phenolic ethers, and the deprotection of silyl esters
报道了一种新型的微波辅助,化学选择性和高效的方法,用于Selectfluor催化的甲硅烷基醚(脂族和芳族)裂解。在芳基甲硅烷基醚的存在下,可以高收率化学选择裂解各种TBS,TIPS和TBDPS保护的烷基甲硅烷基醚。在这些反应条件下,还可以实现酚TBS醚而不是TIPS或TBDPS保护的酚醚的化学选择性脱保护,以及甲硅烷基酯的脱保护。另外,观察到在醇溶剂中苄基羟基的醚交换和醚化。