Thermodynamic, spectroscopic, and density functional theory studies of allyl aryl and prop-1-enyl aryl ethers. Part 1. Thermodynamic data of isomerization
New selectivities from old catalysts. Occlusion of Grubbs’ catalysts in PDMS to change their reactions
作者:M. Brett Runge、Martin T. Mwangi、Ned B. Bowden
DOI:10.1016/j.jorganchem.2006.09.022
日期:2006.12
dissolved in methylene chloride also react by olefin isomerization with occluded catalysts. Eleven examples of substrates that exhibit dual reactivity by undergoing olefin isomerization with occluded catalysts and olefin metathesis with catalysts dissolved in methylene chloride are reported. Most of these substrates have olefins with allylic phosphine oxides, carbonyls, or ethers. Control experiments demonstrate
A concise synthesis of carpanone using solid-supported reagents and scavengers
作者:Ian R. Baxendale、Ai-Lan Lee、Steven V. Ley
DOI:10.1039/b203388g
日期:2002.8.8
Polymer-supported reagents have been applied to the synthesis of the natural product carpanone resulting in a clean and efficient synthesis without the requirement for conventional purification techniques. A new polymer-supported transition metal isomerisation catalyst is also reported.
A Highly Active Cationic Ruthenium Complex for Alkene Isomerisation: A Catalyst for the Synthesis of High Value Molecules
作者:Simone Manzini、David J. Nelson、Steven P. Nolan
DOI:10.1002/cctc.201300396
日期:2013.10
You′ve been valorized! A novel cationic ruthenium complex is shown to be efficient in the isomerization of important feedstocks derived from essential oils, which can then be functionalized through olefin metathesis.
Specific <i>Z</i>-Selectivity in the Oxidative Isomerization of Allyl Ethers to Generate Geometrically Defined <i>Z</i>-Enol Ethers Using a Cobalt(II)(salen) Complex Catalyst
作者:Guanxin Huang、Miaolin Ke、Yuan Tao、Fener Chen
DOI:10.1021/acs.joc.0c00004
日期:2020.4.17
synthesis of the geometrically less stable Z-enol ethers is challenging. An efficient Z-selective oxidative isomerization process of allyl ethers catalyzed by a cobalt(II) (salen) complex using N-fluoro-2,4,6-trimethylpyridinium trifluoromethanesulfonate (Me3NFPY•OTf) as an oxidant has been developed. Thermodynamically less stable Z-enol ethers were prepared in excellent yields with high geometric control.
Mechanistic Studies of Alkene Isomerization Catalyzed by CCC-Pincer Complexes of Iridium
作者:Spring Melody M. Knapp、Sarah E. Shaner、Daniel Kim、Dimitar Y. Shopov、Jennifer A. Tendler、David M. Pudalov、Anthony R. Chianese
DOI:10.1021/om400786r
日期:2014.1.27
Iridium complexes containing CCC-pincer m-phenylene-bridged N-heterocycliccarbene ligands were examined as catalysts for alkene isomerization. Complexes containing either mesityl or adamantyl side groups were found to catalyze the isomerization of a number of alkenes to the internal isomers, including 1-octene, vinylcyclohexane, and allylbenzene. Mechanistic studies indicate a surprising dichotomy