Organopalladium(IV) chemistry: oxidative addition of organohalides to dimethylpalladium(II) complexes to form ethyl, σ-benzyl, and σ-allylpalladium(IV) complexes
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 10,p. 639-641
- https://doi.org/10.1039/c39880000639
Abstract
The first examples of ethyl, σ-benzyl, and σ-allylpalladium(IV) complexes are formed on oxidative addition of organohalides to PdMe2{(pyridin-2-yl)bis(N-methylimidazol-2-yl)methane}[PdMe2{(py)(mim)2CH}]; the complexes [fac-PdRMe2{(py)(mim)2CH-N,N′,N′}]X (RX = Etl, PhCH2Br, CH2 CHCH2Br) are stable at ambient temperature, with the cations present as two isomers, and benzyl bromide also forms the neutral complex fac-Pd(CH2Ph)Me2(bipy)Br on oxidative addition to PdMe2(2,2′-bipyridyl), but Etl and CH2 CHCH2Br form transient PdIV species, detectable by 1H n.m.r. spectroscopy, prior to reductive elimination reactions.Keywords
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