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.
Synthesis of Allenes through Triazole Gold(III) Catalysed Rearrangement of Propargyl Vinyl Ethers
作者:Dawei Wang、Yongchun Yang、Ronghui Huang、Likui Wang、Huida Wan
DOI:10.3184/174751916x14754985053189
日期:2016.11
of allene derivatives was developed through pyridyltriazole gold(III) catalysed rearrangement of propargyl vinyl ethers with moderate to good yields. It was found that the pyridyltriazole gold(III) complex is a good chemoselective catalyst in selective activation of alkynes and allenes. Compared to gold(I) catalysts, the pyridyltriazole gold(III) shows much better substrate tolerance and much higher