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Issue 45, 2015
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Reactivity of platinum alkyne complexes towards N-fluorobenzenesulfonimide: formation of platinum compounds bearing a β-fluorovinyl ligand

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Abstract

The platinum(0) alkyne complexes [Pt(L)(η2-PhC[triple bond, length as m-dash]CPh)] 1–4 were synthesized by reactions of [Pt(cod)2] with diphenylacetylene and a phosphine ligand precursor (1: L = dcpe, 2: L = xantphos, 3: L = κ2-(P,N)-iPr2PC3H6NMe2, 4: L = κ2-(P,N)-iPr2PC2H4NMe2). Treatment of 1 or 4 with NFSI gave the complexes [Pt(F){N(SO2Ph)2}(dcpe)] (5) and [Pt(PhC[double bond, length as m-dash]CFPh){N(SO2Ph)2}{κ2-(P,N)-iPr2PC2H4NMe2}] (8), whereas the reactivity of 2 and 3 towards NFSI led to product mixtures. The compounds [Pt(F){N(SO2Ph)2}(xantphos)] (6a) as well as [Pt(PhC[double bond, length as m-dash]CFPh){N(SO2Ph)2}{κ2-(P,N)-iPr2PC2H4NMe2}] (7a) and [Pt(PhC[double bond, length as m-dash]CFPh)(F){κ2-(P,N)-iPr2PC2H4NMe2}] (7b) were clearly identified. Ligand exchange reactions at 8 resulted in the formation of the β-fluorovinyl platinum(II) complexes [Pt(PhC[double bond, length as m-dash]CFPh){OC(O)CF3}{κ2-(P,N)-iPr2PC2H4NMe2}] (9), [Pt(PhC[double bond, length as m-dash]CFPh)(FHF){κ2-(P,N)-iPr2PC2H4NMe2}] (10) and [Pt(PhC[double bond, length as m-dash]CFPh)(F){κ2-(P,N)-iPr2PC2H4NMe2}] (11). Treatment of 8 with dihydrogen yielded the fluorinated olefin (Z)-(1-fluoroethene-1,2-diyl)dibenzene and [Pt{N(SO2Ph)2}(H){κ2-(P,N)-iPr2PC2H4NMe2}] (12).

Graphical abstract: Reactivity of platinum alkyne complexes towards N-fluorobenzenesulfonimide: formation of platinum compounds bearing a β-fluorovinyl ligand

  • This article is part of the themed collection: Fluorine
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Publication details

The article was received on 17 Jun 2015, accepted on 06 Aug 2015 and first published on 26 Aug 2015


Article type: Paper
DOI: 10.1039/C5DT02306H
Citation: Dalton Trans., 2015,44, 19553-19565
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    Reactivity of platinum alkyne complexes towards N-fluorobenzenesulfonimide: formation of platinum compounds bearing a β-fluorovinyl ligand

    J. Berger, T. Braun, R. Herrmann and B. Braun, Dalton Trans., 2015, 44, 19553
    DOI: 10.1039/C5DT02306H

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