Palladium-Catalyzed Cross-Coupling in Aqueous Media: Recent Progress and Current Applications

Author(s): Kevin H. Shaughnessy, Rebecca B. DeVasher.

Journal Name: Current Organic Chemistry

Volume 9 , Issue 7 , 2005

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Water has attracted significant attention as an alternative solvent for homogeneous metal-catalyzed reactions because it is a non-toxic, nonflammable solvent that can allow for simplified recovery of homogeneous catalysts. The use of water as a solvent in palladium-catalyzed cross-coupling reactions is of great academic and industrial interest. Palladium-catalyzed coupling reactions are powerful methods to make carbon-carbon and carbon-heteroatom bonds under mild conditions. Separation of the catalyst from the organic product can be very difficult; however, constraining the catalyst to the aqueous-phase of an aqueous-biphasic solvent system can potentially simplify catalyst recovery. This review will focus on recent developments in the design and application of aqueous-phase, palladium-catalyzed coupling reactions over the period from 2000, through late 2004. A variety of new hydrophilic ligand architectures have been introduced recently that provide significantly more active catalysts towards industrially relevant aryl bromides and chlorides.

Keywords: catalysis, palladium-catalyzed cross-coupling, tppts, hydrophobic substrate, biaryl synthesis, surfactants, carbon nucleophiles

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Article Details

Year: 2005
Page: [585 - 604]
Pages: 20
DOI: 10.2174/1385272053765042
Price: $58

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