Copper(i) acetate-catalyzed azide–alkyne cycloaddition for highly efficient preparation of 1-(pyridin-2-yl)-1,2,3-triazoles
作者:Qun Zhang、Xinyan Wang、Chuanjie Cheng、Rui Zhu、Nan Liu、Yuefei Hu
DOI:10.1039/c2ob06942c
日期:——
A highly efficient copper(I)-catalyzed azideâalkyne cycloaddition (CuAAC) of 6-substituted tetrazolo[1,5-a]pyridines was developed for the preparation of 1-(pyridin-2-yl)-1,2,3-triazoles by simply using copper(I) acetate as a catalyst. The in situ formed HOAc played important dual roles and an activation of 2-azidopyridineâcopper(I) complex was observed.
Conversion of Pyridine<i>N</i>-Oxides to Tetrazolopyridines
作者:Shanshan Liu、Dieter Lentz、C. Christoph Tzschucke
DOI:10.1021/jo500231m
日期:2014.4.4
An efficient and convenient procedure for the conversion of pyridineN-oxides to tetrazolopyridines by treatment with 4-toluene sulfonyl chloride and sodium azide in toluene at elevated temperature is described.