A series of novel bis(NHC) Cu(i) catalysts enables the production of triazoles with different substitution patterns and bioconjugation via “click” chemistry under homogeneous and/or heterogeneous catalytic conditions in aqueous media.
Design, synthesis, anticancer, docking and in silico assessment for 8-caffeinyl-triazolylmethoxy hybrid conjugates are explained. These compounds have remarkable activities against malanoma and breast cancer cell lines.
[EN] GROUP 9 TRANSITION METAL CATALYSTS AND PROCESS FOR USE OF SAME<br/>[FR] CATALYSEURS À MÉTAL DE TRANSITION DU GROUPE 9 ET PROCÉDÉ D'UTILISATION DE CEUX-CI
申请人:GUANG MING INNOVATION COMPANY WUHAN
公开号:WO2014172885A1
公开(公告)日:2014-10-30
This invention relates to group 9 transition metal catalysts and process for use of the catalysts in alkyne-azide cycloaddition (Click reaction), in reaction utilizing CO2 as a carbon feedstock to react with epoxides to produce cyclic or polycarbonate products and in reactions utilizing CO2 as a carbon feedstock to react with terminal alkynes to produce carboxylic acids. The catalyst compounds of the invention are represented by the formula (I) wherein M is a Group 9 metal; X is an anionic ligand; L is a two electron donor ligand bearing two ionic groups (G); and by the formula (II) wherein M is a group 9 metal; L1 and L2 are two-electron donor ligands each bearing one ionic group (G) and A - is anion. The present invention also relates to an easy applicable catalyst synthesis and the application in different click-processes, different reactions involving CO2 and their different application fields. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and industrial and fine chemicals chemistry.
Synthesis of novel 1,4-disubstituted 1,2,3-triazoles bearing organosilicon-sulfur groups via the click reaction sonocatalyzed by LaCu<sub>x</sub>Mn<sub>1-x</sub>O<sub>3</sub> nanoparticles
作者:Kazem D. Safa、Hanieh Mousazadeh
DOI:10.1080/00397911.2016.1217339
日期:2016.10.1
ABSTRACT A highly efficient and environmentally friendly one-pot procedure for the synthesis of 1,2,3-triazoles by 1,3-dipolarcycloaddition of benzyl halides, terminal alkynes, and sodium azide over LaCuxMn1-xO3 perovskite oxides was developed. LaCu0.7Mn0.3O3 was found to be active with low catalyst loading under ultrasonic irradiation in aqueous media. The reaction was performed efficiently in the presence