Hyperbranched polyethylenimine-supported copper(II) ions as a macroliganted homogenous catalyst for strict click reactions of azides and alkynes in water
作者:Hicham Ben El Ayouchia、Hamid ElMouli、Lahoucine Bahsis、Hafid Anane、Rachid Laamari、Carlos J. Gómez-García、Miguel Julve、Salah-Eddine Stiriba
DOI:10.1016/j.jorganchem.2019.120881
日期:2019.10
Loading hyperbranched polyethylenimine (PEI) with copper(II) ions leads to the formation of a new water-soluble metallodendritic polymer Cu(II)-PEI that has been found to effectively catalyze the clickable azide-alkyne [3 + 2] cycloaddition reactions in water under ambient conditions, in the lack of any external reducing agent. A positive dendritic effect on the catalyst activity was observed in the
Heterogeneous Catalytic Reactions “On Water” by Using Stable Polymeric Alkynylcopper(I) Pre-Catalysts: Alkyne/Azide Cycloaddition Reactions
作者:Benjamin R. Buckley、Sandra E. Dann、Harry Heaney、Emma C. Stubbs
DOI:10.1002/ejoc.201001326
日期:2011.2
Dinuclear alkynylcopper(I) complexes have been found to be the active pre-catalysts in copper-catalysed cycloaddition of azides and terminal alkynes (CuAAC). These copper(I) ladderane polymers are used in “on water” CuAAC reactions, with loadings as low as 1 mol-%.