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Synthesis 2006(10): 1639-1644  
DOI: 10.1055/s-2006-926453
PAPER
© Georg Thieme Verlag Stuttgart · New York

Effective Removal and Quantitative Analysis of Pd, Cu, Ni, and Pt Catalysts from Small-Molecule Products

Kim T. Nielsen*a, Klaus Bechgaardb, Frederik C. Krebsa
a The Danish Polymer Centre, RISØ National Laboratory, P.O. Box 49, Roskilde 4000, Denmark
Fax: +4546777491; e-Mail: kim.troensegaard.nielsen@risoe.dk;
b Department of Chemistry, University of Copenhagen, Copenhagen 2100, Denmark
Further Information

Publication History

Received 7 November 2005
Publication Date:
27 April 2006 (online)

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Abstract

We demonstrate the ability of N,N-diethylphenyl­azothioformamide and N,N-bis[tetra(ethylene glycol)monomethyl ether]phenylazothioformamide ligands to dissolve the four transition metals: palladium, copper, nickel and platinum. The method allows solubilisation and quantitative analysis of the transition-metal content in their bulk metallic forms and as nanoparticles produced during their use as catalysts in Sonogashira coupling reactions.

Key words

palladium - copper - nickel - cross-coupling reaction - catalysis

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