An Efficient Means for Generating <i>p</i>-Methoxybenzyl (PMB) Ethers under Mildly Acidic Conditions
作者:Leo Paquette、Catherine Stewart、Xiaowen Peng
DOI:10.1055/s-2008-1032132
日期:2008.2
The protection of a wide variety of alcohols as their p-methoxybenzyl ethers can be performed with PMBO-lepidine in the presence of methyl tosylate or, preferably, camphorsulfonic acid. No inorganic promoters are required, thereby facilitating workup and product isolation.
New Reagents for the Synthesis of Arylmethyl Ethers and Esters
作者:Gregory Dudley、Philip Albiniak
DOI:10.1055/s-0029-1219531
日期:2010.4
developmentof new arylmethyl transfer (benzylation) reagents for protectingoxygen functional groups under relatively mild and neutral conditions.It begins with an investigation of organosiletanes as surrogatehydroxyl groups, which inspired siletane-functionalized benzyl ethersand forced us to confront the difficulties associated with the synthesisof benzyl ethers. The end result is a new series of neutral oxypyridiniumsalts