Subnanometer Gold Clusters on Amino-Functionalized Silica: An Efficient Catalyst for the Synthesis of 1,3-Diynes by Oxidative Alkyne Coupling
作者:Beáta Vilhanová、Jiří Václavík、Luca Artiglia、Marco Ranocchiari、Antonio Togni、Jeroen A. van Bokhoven
DOI:10.1021/acscatal.7b00691
日期:2017.5.5
on amino-functionalized silica catalyze Glaser-type alkyne coupling, providing corresponding 1,3-diynes under mild conditions. Readily available λ3-iodane PhI(OAc)2 is used as an oxidant and 1,10-phenanthroline is used as an additive. Ten symmetrical 1,3-diynes and three products of heterocoupling containing various functionalities are isolated in high yields. The catalyst can be recycled at least