Catalyst Recycling via Hydrogen-Bonding-Based Affinity Tags
作者:Bas W. T. Gruijters、Maarten A. C. Broeren、Floris L. van Delft、Rint P. Sijbesma、Pedro H. H. Hermkens、Floris P. J. T. Rutjes
DOI:10.1021/ol0607387
日期:2006.7.1
for catalystrecycling is described. Copper(I)-based catalysts, equipped with an affinity tag, are isolated from crude reaction mixtures on the basis of quadruple hydrogen-bonding interactions using a resin functionalized with complementary affinity tags. Recycledcatalysts were successfully used to catalyze a tandem Sonogashira coupling/5-endo-dig cyclization and a Cu-catalyzed [3+2] Huisgen cycloaddition