Ligand free, highly efficient synthesis of diaryl ether over copper fluorapatite as heterogeneous reusable catalyst
作者:Shafeek A.R. Mulla、Suleman M. Inamdar、Mohsinkhan Y. Pathan、Santosh S. Chavan
DOI:10.1016/j.tetlet.2012.01.124
日期:2012.4
A novel ligand-free, highlyefficient, and an inexpensive method has been developed by using ecofriendly, heterogeneous reusable copper fluorapatite (CuFAP) catalyst for the synthesis of diaryl ethers from the cross coupling reaction of the various substituted aryl halides (fluoride, chloride, bromide, and iodide) with the potassium salts of various substituted phenols in the presence of N-methyl 2-pyrrolidone
The First C−Cl Activation in Ullmann C−O Coupling by MOFs
作者:Leila Ramezani、Asieh Yahyazadeh、Mehdi Sheykhan
DOI:10.1002/cctc.201801111
日期:2018.10.23
Ag(I) into the framework of Cu3(BTC)2 ⋅ xH2O in maghemite anchored CuBTC activated the inert CuBTC astonishingly to exhibit unexpected high catalytic activity for C−Clactivation in coupling of chloroarenes with phenols without the use of expensive ligands. This is the first application of mixed‐metal MOFs in the C−X activation. Putting reusability and activity together, a TON over 15000 was obtained
Copper(I) Phenoxide Complexes in the Etherification of Aryl Halides
作者:Jesse W. Tye、Zhiqiang Weng、Ramesh Giri、John F. Hartwig
DOI:10.1002/anie.200902245
日期:2010.3.15
No copping out! Copper(I) phenoxidecomplexes containing chelating ligands (see picture), proposed intermediates in copper‐catalyzed etherification of arylhalides, have been synthesized and fully characterized. The kinetic and chemical competence of the isolated complexes are demonstrated for the synthesis of aryl phenyl ethers, and experiments provide evidence against mechanistic pathways involving
INHIBITION OF P38 KINASE ACTIVITY USING SUBSTITUTED HETEROCYCLIC UREAS
申请人:Dumas Jacques
公开号:US20120046290A1
公开(公告)日:2012-02-23
This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases, other than cancer and proteolytic enzyme mediated diseases, other than cancer, and pharmaceutical compositions for use in such therapy.
nanoparticles have been studied for C−N, C−O, and C−S bond formations via cross-couplingreactions of nitrogen, oxygen, and sulfur nucleophiles with aryl halides. Amides, amines, imidazoles, phenols, alcohols and thiols undergo reactions with aryl iodides in the presence of a base such as KOH, Cs2CO3, and K2CO3 at moderate temperature. The procedure is simple, general, ligand-free, and efficient to afford the
通过氮,氧和硫亲核试剂与芳基卤化物的交叉偶联反应,已研究了CuO纳米颗粒的C-N,C-O和C-S键形成。酰胺,胺,咪唑,酚,醇和硫醇在中等温度下在碱(例如KOH,Cs 2 CO 3和K 2 CO 3)存在下与芳基碘化物反应。该过程简单,通用,无配体且有效地以高收率提供了交叉偶联的产物。