Reagent for synthesis of para-methoxbenzyl (PMB) ethers and associated methods
申请人:Florida State University Research Founation, Inc.
公开号:US07960553B1
公开(公告)日:2011-06-14
A newly synthesized compound designated lepidine ether 2-(4-Methoxybenzyloxy)-4-methylquinoline reacts with methyl triflate in the presence of alcohols to generate a neutral organic salt that transfers the para-methoxybenzyl (PMB) protecting group onto alcohols in high yield and under mild conditions.
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
Chemoenzymatic Routes to Polyoxygenated Cyclooctenones Related to the Eastern Hemisphere of the Macrolactam Tripartilactam
作者:Yen Vo、Martin G. Banwell、Anthony C. Willis
DOI:10.1002/asia.201301233
日期:2014.1
Polyoxygenatedcyclooctenones closely related to the enantiomeric form of the Easternhemisphere of the structurally and biogenetically unusual macrolactamtripartilactam have been assembled from an enzymatically‐derived and homochiral cis‐1,2‐dihydrocatechol. Key steps include the oxidative cleavage of the chlorinated double bond within a derivative of the starting cis‐1,2‐dihydrocatechol and a ring‐closing
Development of a β-C–H Bromination Approach toward the Synthesis of Jerantinine E
作者:Tatjana Huber、Teresa A. Preuhs、Christa K. G. Gerlinger、Thomas Magauer
DOI:10.1021/acs.joc.7b01095
日期:2017.7.21
The development of an asymmetric and highly convergent three-component synthesis of the functionalized ABC ring system of the Aspidosperma alkaloid jerantinine E is reported. The presented synthetic strategy relies on our recently developed method for the one-pot β-C–H bromination of enones, which allows for rapid construction of the tricyclic tetrahydrocarbazolone core via a palladium-catalyzed amination