The synthesis of methyl triazole-4-carboxylate gold(I) complex and application on allene synthesis and alkyne hydration
作者:Wenkang Hu、Liang Shan、Fudong Ma、Yilin Zhang、Yongchun Yang、Dawei Wang
DOI:10.1016/j.inoche.2019.107564
日期:2019.11
Abstract The methyl 1H-1,2,3-triazole-4-carboxylate containing a strong electron-withdrawing group was developed and applied as a ligand for gold(I) cations. The resulting ester-triazole gold(I) complex was investigated for its efficiency in catalyzing allene synthesis and alkyne hydration, in which an excellent catalytic efficiency was observed with low catalyst loadings.
The synthesis and structural characterization of furanyl-1,2,3-triazole Gold(I) and its application in synthesis of enones from propargylic esters and alcohols
作者:Wei Yao、Yilin Zhang、Xiaqing Xu、Yongchun Yang、Wei Zeng、Dawei Wang
DOI:10.1016/j.jorganchem.2019.120944
日期:2019.11
Furanyl-1,2,3-triazole gold(I) was designed, synthesized and characterized by X-ray crystallography, and was found to exhibit high catalytic activity for the synthesis of enones in good to high yields through a propargylic ester rearrangement and subsequent hydration. Notably, excellent E/Z selectivity was observed in these transformations. This catalyst was also effective in catalyzing the rearrangement
Anchoring Triazole-Gold(I) Complex into Porous Organic Polymer To Boost the Stability and Reactivity of Gold(I) Catalyst
作者:Rong Cai、Xiaohan Ye、Qi Sun、Qiuqin He、Ying He、Shengqian Ma、Xiaodong Shi
DOI:10.1021/acscatal.6b03211
日期:2017.2.3
Stability and reactivity have been recognized as some critical issues for gold(I) catalysts. Such issues can be well-circumvented by anchoring the gold(I) complex onto the backbones of porous organic polymer (POP) followed by coordination with a triazole ligand as illustrated in the present work via a series of gold(I)-catalyzed reactions. In this strategy, 1,2,3-triazole was used as the special "X-factor"
Design and Synthesis of Alanine Triazole Ligands and Application in Promotion of Hydration, Allene Synthesis and Borrowing Hydrogen Reactions
作者:Yongchun Yang、Anni Qin、Keyan Zhao、Dawei Wang、Xiaodong Shi
DOI:10.1002/adsc.201600141
日期:2016.4.28
alanine triazole (ATA) ligand was found to be an efficient partner for the stabilization of gold(III), thus rendering improved stability and high catalytic activities in allene synthesis and hydration reactions through the 3,3′‐arrangement of propargyl esters and propargyl alcohols. In addition to Au(I), ATA‐gold(III) was also proven to be an effective catalyst in promoting the formation of allenes
Ligand influence in the selective gold-mediated synthesis of allenes
作者:Pierrick Nun、Sylvain Gaillard、Alexandra M. Z. Slawin、Steven P. Nolan
DOI:10.1039/c0cc03071f
日期:——
The use of [(IPr)AuOH] permits the generation of gold(i)-amine complexes by a silver-freeprotocol. These in situ or well-defined complexes are used in a straightforward synthetic route to substituted allenes from propargylic acetates. The catalytic activity can be modulated as a function of the nature of the ligand bound to the gold-NHC moiety.