10.1002/cctc.201700580
ChemCatChem
COMMUNICATION
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The results obtained provide valuable hints on the reaction
mechanism. The formation of catalytically active species occurs
via dissociation of dvtms. The formed platinum(0) species
undergoes rate determining oxidative addition to form platinum
acetylene hydride complex that may subsequently react with
acetylene molecule via hydro- or carbometallation pathway.
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acetylide-carbometallation pathway.
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synthesized, characterized and proved catalytically active in the
fully regio- and stereoselective dimerization of terminal
acetylenes. Catalysts 1 and 2 are first platinum complexes
active in this transformation. The results demonstrate that
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Acknowledgements
The authors gratefully acknowledge the financial support from
the National Centre for Research and Development (Poland)
(Project No. PBS2/A5/40/2014). P.Ż. acknowledges the financial
support from the Foundation for Polish Science (Project No.
POMOST/2012-6/14) co-financed from the European Union
under the European Regional Development Fund.
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Keywords: Alkynes • Dimerization • N-heterocyclic carbene •
Platinum • Homogeneous catalysis
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