The Sequential Sonogashira-Click Reaction: A Versatile Route to 4-Aryl-1,2,3-triazoles
作者:Zoltán Novák、Krisztián Lőrincz、Péter Kele
DOI:10.1055/s-0029-1216985
日期:2009.10
Aryl halides can be easily transformed in a one-pot procedure into 4-aryl-1,2,3-triazoles with palladium/copper-catalyzed Sonogashira-click reaction sequence, using trimethylsilylacetylene as acetylene surrogate.
homogeneous copper complexes. Iron not only behaves as support for copper, but acts as a redox scavenger, and reduces the copper contamination of the organic product. Dipolar cycloaddition of terminal alkynes and azides catalyzed by the Cu/Fe bimetallic system is reported. In the presence of a readily accessible nanosized copper source, the cycloaddition reaction can be easily achieved at ambient temperature