Ionic liquid assisted silver-catalyzed one-pot A3-coupling reactions for the synthesis of propargylamines
作者:Anlian Zhu、Chunyan Du、Yue Zhang、Lingjun Li
DOI:10.1016/j.molliq.2019.01.142
日期:2019.4
A series of ionic liquids with different cations and anions were synthesized and their performances for the silver catalyzed one-pot A3-coupling reactions were investigated. The selection showed that the combination of AgNO3 and ionic liquid [TMG][TFA] showed highest catalytic activity. This catalytic system was then utilized for the production a series of propargylamines with satisfactory isolated
Shedding light on the use of Cu(<scp>ii</scp>)-salen complexes in the A<sup>3</sup> coupling reaction
作者:Stavroula I. Sampani、Victor Zdorichenko、Marianna Danopoulou、Matthew C. Leech、Kevin Lam、Alaa Abdul-Sada、Brian Cox、Graham J. Tizzard、Simon J. Coles、Athanassios Tsipis、George E. Kostakis
DOI:10.1039/c9dt04146j
日期:——
phenoxido salen based ligands. These ligands orchestrate topological control permitting alkyne binding with concomitant activation of the C–H bond and simultaneously acting as a template temporarily accommodating the abstracted acetylenic proton, and continuously generating, via in situ formed radicals and a Single Electron Transfer (SET) mechanism, a transient Cu(I) active site to facilitate this transformation
Two original macrocyclic silver(I)(pyridine-containing ligand) complexes [Ag(I)(Pc-L)] were synthesized and characterized. Their ability to catalyze the coupling among aldehydes, terminal alkynes and amines (A3-coupling) was demonstrated. The reaction could be performed under conventional as well as dielectric heating. The catalysts were effective in both cases, but dielectric heating allowed a lower
A multifunctional use of bis(methylene)bis(5-bromo-2-hydroxyl salicyloylhydrazone): from metal sensing to ambient catalysis of A3 coupling reactions
作者:Krisana Peewasan、Marcel P. Merkel、Olaf Fuhr、Christopher E. Anson、Annie K. Powell
DOI:10.1039/d0ra07687b
日期:——
3D-complexes of the ligand H6L = bis(methylene)bis(5-bromo-2-hydroxyl salicyloylhydrazone) not only show promising fluorescence sensing properties but are also effective A3 coupling reagents.