Catalytic and Computational Studies of N-Heterocyclic Carbene or Phosphine-Containing Copper(I) Complexes for the Synthesis of 5-Iodo-1,2,3-Triazoles
作者:Steven Lal、Henry S. Rzepa、Silvia Díez-González
DOI:10.1021/cs500326e
日期:2014.7.3
Two complementary catalytic systems are reported for the 1,3-dipolar cycloaddition of azides and iodoalkynes. These are based on two commercially available/readily available coppercomplexes, [CuCl(IPr)] or [CuI(PPh3)3], which are active at low metal loadings (PPh3 system) or in the absence of any other additive (IPr system). These systems were used for the first reported mechanistic studies on this
Efficient copper-catalyzed tandem oxidative iodination and alkyne-azide cycloaddition in the presence of glycine-type ligands
作者:Donghe Yuan、Shilei Wang、Gongming Zhu、Anlian Zhu、Lingjun Li
DOI:10.1016/j.tet.2020.131911
日期:2021.2
described that a copper-catalyzed (10 mol%) tandem oxidativeiodination and alkyne-azide cycloaddition could be completed in the presence of the newly-found glycine-type ligands with low-cost NaI as the iodine resource. In the novel reaction system, a wide range of terminal alkyne, organic azide and inexpensive iodide could react effectively in one pot to give structurally diverse 5-iodo-1,4-subsitutied 1,2
direct modification of bioactive molecules in water. Through the combination of water‐compatible oxidative iodination and the copper‐catalyzed alkyne–azide cycloaddition reaction, a novel copper‐catalyzed aqueous multicomponent synthetic method for the preparation of 5‐iodo‐1,2,3‐triazoles has been developed. The method is highly effective and selective for substrates including biologically relevant