Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 24, Pages 4088-4094Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201500588
Keywords
Homogeneous catalysis; Cross-coupling; Palladium; Water-soluble complexes
Categories
Funding
- University of Cape Town
- Department of Science and Technology, South Africa
- Canon Collins Trust
- NRF South Africa/China bilateral fund
- NRF Department of Science and Technology (DST), Centre of Excellence in Catalysis (c*change)
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A series of mono- and binuclear sulfonated thiosemicarbazone Pd-II complexes have been synthesised and characterised using nuclear magnetic resonance spectroscopy, infrared spectroscopy, electrospray ionisation mass spectrometry and elemental analysis. The complexes display excellent water-solubility at room temperature and in addition, H-1 and P-31{H-1} NMR spectroscopic experiments reveal that the mononuclear complex 4 is very stable in water at 70 degrees C. Consequently, preliminary catalytic experiments show the water-soluble complexes to be efficient catalyst precursors in the Suzuki-Miyaura cross-coupling reaction in water. No evidence of homo-coupling was observed and the water-soluble complexes demonstrated versatility in coupling substrates containing various functional groups.
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