Deprotection of benzyl and p-methoxybenzyl ethers by chlorosulfonyl isocyanate–sodium hydroxide
摘要:
CSI-NaOH procedure provided a new and mild methodology for the deprotection of benzyl and p-methoxybenzyl ethers without affecting the other functional groups under similar reaction conditions. (C) 2003 Elsevier Science Ltd. All rights reserved.
Selective deprotection of benzyl (Bn) ethers in the presence of para-methoxybenzyl (PMB) ethers
作者:Xiaohua Li、Zachary Saleh、Brian Egri、Ali Hourani、Luke Harding、Kedar N. Baryal、Jianglong Zhu
DOI:10.1016/j.tetlet.2015.01.105
日期:2015.3
Substituted benzylethers have been widely used as readily manipulatable protecting groups for organic synthesis. It is known that electron-rich para-methoxybenzyl (PMB) ethers can be selectively deprotected over benzyl or other electron-poor benzylethers under oxidative conditions. In this presentation, we will describe an approach for selective deprotection of benzylethers in the presence of PMB