η-Allylmetal chemistry. Part 7. Allylic alkylation catalysed by platinum complexes. Isolation of rigid (σ-allyl)(pentane-2,4-dionato)platinum(II) complexes
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 939-943
- https://doi.org/10.1039/dt9790000939
Abstract
Reactions of β-diketo-anions with η3-allylbis(triphenylphosphine)platinum(II) complexes or allyl acetates in the presence of triphenylphosphineplatinum complexes afford high yields of allylic alkylation products. Alkylation of the corresponding η3-but-2-enylplatinum(II) complex gives a larger amount of the product of coupling at the secondary carbon than of that at the primary carbon, while the reversed selectivity is found in the reaction of the η3-but-2-enylpalladium(II) complex. Reactions of η3-allylmono(triphenylphosphine)platinum(II) complexes with thallium(I) pentane-2,4-dionate give stereochemically rigid, thermally stable, (σ-allyl)(pentane-2,4-dionato)-platinum(II) complexes.Keywords
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