[EN] CATALYST COMPLEXES WITH CARBENE LIGAND AND METHOD FOR MAKING SAME AND USE IN METATHESIS REACTION<br/>[FR] COMPLEXES DE CATALYSEURS AVEC UN LIGAND CARBÈNE, LEUR PROCÉDÉ DE FABRICATION ET LEUR UTILISATION DANS UNE RÉACTION DE MÉTATHÈSE
申请人:GUANG MING INNOVATION COMPANY WUHAN
公开号:WO2014108071A1
公开(公告)日:2014-07-17
This invention relates to catalyst compounds and the synthesis and applications useful in olefin metathesis reactions. The catalyst compounds of the invention are represented by the formula (I): wherein M is a Group 8 metal; X1 and X2 are anionic ligands; L1 and L2 are neutral two electron donor ligands. The present invention also relates to an easy applicable catalyst synthesis and the application in different olefin metathesis processes, e.g. Reaction Injection Molding (RIM), process to make α-olefins from fatty acid ester, e.g. methyl oleate.
Metal‐Free Synthesis of (
<i>E</i>
)‐Vinyl Sulfones
<i>via</i>
An Insertion of Sulfur Dioxide/1,5‐Hydrogen Atom Transfer Sequence
作者:Fu‐Sheng He、Yanfang Yao、Wenlin Xie、Jie Wu
DOI:10.1002/adsc.202000778
日期:2020.11.4
A metal‐free three‐component reaction of propargyl alcohols, sodium metabisulfite, and aryldiazonium tetrafluoroborates under mild conditions is described. The reaction proceeds efficiently at room temperature without the need of any catalysts, affording the corresponding (E)‐vinyl sulfones in moderate to good yields with excellent functional group tolerance. Preliminary mechanistic studies show that
Regioselective introduction of vinyl trifluoromethylthioether to remote unactivated C(sp3)—H bonds via radical translocation cascade
作者:Shuo Wu、Xinxin Wu、Zhen Wu、Chen Zhu
DOI:10.1007/s11426-019-9527-5
日期:2019.11
the regioselective introduction of a vinyl trifluoromethylthioether to remote unactivatedC(sp3)—Hbonds. The cascade process involves the vinyl radical-mediated 1,5-hydrogen atom transfer (HAT) and remote vinyl migration. During the transformation, inert C—H and C—Cbonds are consecutively cleaved undermildconditions. The reaction features good functional group tolerance, broad substrate scope,
CATALYST COMPLEXES WITH CARBENE LIGAND AND METHOD FOR MAKING SAME AND USE IN METATHESIS REACTION
申请人:GUANG MING INNOVATION COMPANY (WUHAN)
公开号:US20150367338A1
公开(公告)日:2015-12-24
This invention relates to catalyst compounds and the synthesis and applications useful in olefin metathesis reactions. The catalyst compounds of the invention are represented by the formula (I): wherein M is a Group 8 metal; X
1
and X
2
are anionic ligands; L
1
and L
2
are neutral two electron donor ligands. The present invention also relates to an easy applicable catalyst synthesis and the application in different olefin metathesis processes, e.g. Reaction Injection Molding (RIM), process to make α-olefins from fatty acid ester, e.g. methyl oleate.
fluorinated alkene synthesis using easily accessible and modular thianthrenium salts with electron-withdrawing alkynes or propargyl alcohols is reported. Vinyl radical intermediates, formed by the reaction between the alkyl or trifluoromethyl thianthrenium salts and electronically diverse alkynes, can mediate the key 1,5-HAT process of regioselective C(sp3)–H fluorination and vinylation. This protocol