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Reactivity of functionalized thiosemicarbazone complexes towards phosphines
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1  University of Santiago de Compostela, Department of Inorganic Chemistry


Abstract – The aim of this work is the design, synthesis and characterization of a series of phenylboronic cyclometallated derivatives bearing different phosphines. Palladium cyclometallated compounds have proved to be useful as catalysts in cross coupling reactions [1, 2]. In particular, palladacycles with a boronic acid function may lead to further modifications applicable to the Suzuki-Miyaura reaction [3], thus modifying the properties of the compounds. Reactivity towards phosphine ligands provides different structures [4] that modulate the applicability to the coupling reaction.

The compounds were prepared by reaction of cyclometallated species with different phosphine ligands and they were characterized by IR, 1H and 31P NMR spectroscopy.

Acknowledgements - We wish to thank the financial support received from the Xunta de Galicia (Galicia, Spain) under the Grupos de Referencia Competitiva Programme Projects GRC2015/009. F. Reigosa and F. Lucio thank the Spanish Ministry of Education (grant FPU15/07145 and FPU13/05014).


[1] M. Ohff; A. Ohff; M.E. van der Boom; D. Milstein; J. Am. Chem. Soc., 1997, 119, 11687.

[2] R.N. Prabhu; R. Ramesh; Tetrahedron Letters, 2013, 54, 1120.

[3] Adrio, L.A., PhD Dissertation, University of Santiago de Compostela, 2006.

[4] Bermúdez, B., PhD Dissertation, University of Santiago de Compostela, 2014.

Keywords: Boronic Acid, Catalysis, Suzuki, Thiosemicarbazone, Palladium, Characterization.