[EN] METATHESIS POLYMERIZATION METHODS<br/>[FR] PROCÉDÉS DE POLYMÉRISATION PAR MÉTATHÈSE
申请人:UNIV WASHINGTON
公开号:WO2016036976A1
公开(公告)日:2016-03-10
The present disclosure is directed to methods of making a polymer, including exposing a reaction mixture including a strained cyclic unsaturated monomer and an organic initiator to a stimulus to provide an activated organic initiator, whereby the activated organic initiator is effective to polymerize the strained cyclic unsaturated monomer via a 4-membered carbocyclic intermediate to provide a polymer having constitutional units derived from the strained cyclic unsaturated monomer.
作者:Kelli A. Ogawa、Adam E. Goetz、Andrew J. Boydston
DOI:10.1021/ja512073m
日期:2015.2.4
We have developed a method to achieve ring-openingmetathesispolymerization (ROMP) mediated by oxidation of organic initiators in the absence of any transitionmetals. Radical cations, generated via one-electron oxidation of vinyl ethers, were found to react with norbornene to give polymeric species with microstructures essentially identical to those traditionally obtained via metal-mediated ROMP
Borata-Wittig olefination reactions of ketones, carboxylic esters and amides with bis(pentafluorophenyl)borata-alkene reagents
作者:Tongdao Wang、Sonja Kohrt、Constantin G. Daniliuc、Gerald Kehr、Gerhard Erker
DOI:10.1039/c7ob01591g
日期:——
PhCH2CH2–). They underwent “non-classical” borata-Wittig olefination reactions with ethylformate to give the respective enolether carbonylation products, or their C1-elongated aldehydes (after hydrolysis). The borata-alkene [Ph–(CH2)2–CHB(C6F5)2−] [Li+HTMP] (16a) gave the respective “non-classical” borata-Wittig olefination products, the enolethers 25a,b and 27, respectively, upon treatment with methyl- or ethyl