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Lewis WG, Magallon FG, Fokin VV, et al. Discovery and characterization of catalysts for azide-alkyne cycloaddition by fluorescence quenching. J Am Chem Soc. 2004;126(30):9152-3doi: 10.1021/ja048425z.
Lewis, W. G., Magallon, F. G., Fokin, V. V., & Finn, M. G. (2004). Discovery and characterization of catalysts for azide-alkyne cycloaddition by fluorescence quenching. Journal of the American Chemical Society, 126(30), 9152-3. https://doi.org/10.1021/ja048425z
Lewis, Warren G, et al. "Discovery and characterization of catalysts for azide-alkyne cycloaddition by fluorescence quenching." Journal of the American Chemical Society vol. 126,30 (2004): 9152-3. doi: https://doi.org/10.1021/ja048425z
Lewis WG, Magallon FG, Fokin VV, Finn MG. Discovery and characterization of catalysts for azide-alkyne cycloaddition by fluorescence quenching. J Am Chem Soc. 2004 Aug 04;126(30):9152-3. doi: 10.1021/ja048425z. PMID: 15281783.
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J Am Chem Soc. 2004 Aug 04;126(30):9152-3. doi: 10.1021/ja048425z.

Discovery and characterization of catalysts for azide-alkyne cycloaddition by fluorescence quenching.

Journal of the American Chemical Society

Warren G Lewis, Fernando G Magallon, Valery V Fokin, M G Finn

Affiliations

  1. Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.

PMID: 15281783 DOI: 10.1021/ja048425z

Abstract

Copper-based catalysts for the 1,3-dipolar cycloaddition of azides and alkynes were screened in parallel fashion using a fluorescence quenching assay. The method was designed to identify systems able to accelerate the coupling of reactants at micromolar concentrations in aqueous mixtures and to obtain quantitative comparisons of their activities. In addition to the tris(triazolylamines) previously reported, two types of compounds (bipy/phen and 2-pyridyl Schiff bases) were found to exhibit significant ligand-accelerated catalysis, with one complex showing especially dramatic rate enhancements. Preliminary explorations of the dependence of reaction rate on pH, ligand:Cu ratio, and Cu concentration are described.

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