(Carboxylato)(Triphenylphosphine) Complexes of the Platinum Metals

Die Umsetzung von Butadien mit Kohlendioxid fuhrt bei Einsatz homogener Palladium-, Ruthenium-und Nickelkomplex-Katalysatoren in Ausbeuten bis zu 59% zum Cg-Lacton 2-EthyIiden-6-hepten-S-olid (3). Possibilities of Cootroliog Transition Metal-eatalyzed Reactions of 1,SDienes with Carbon DioxideThe reaction of butadiene with carbon dioxide using homogeneous palladium, ruthenium, and nickel catalysts affords the Cg-lactone 2-ethyIidene-6-hepten-S-olide (3) in yields up to 59%. In contrast, rhodium catalysts give rise to the formation of the C,,-lactone 2-ethyl-2,4,9-undecatrien-4-olide (10) by connection of three molecules of butadiene with carbon dioxide. The Cj3-lactone can also be synthesized by the rhodium-catalyzed reaction of the C9-lactone with butadiene. -Trialkylphosphines containing a CHR2-group bound to the phosphorus and phosphorous or arsenic ylides proved to be extraordinarily effective and selective ligands in the synthesis of the Cg-lactone. This effect is interpreted by an activation of carbon dioxide by means of the ligand. In the reaction of butadiene with COa ally1 and carboxylate complexes of the transition metals are proposed to be the mechanistic intermediates. In fact, the carboxylate complex bis(2-ethylidene-4,6-heptadienoato)bis(triisopro-

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Substituted ruthenium carbonyl halides

Thomas

1986

Coordination Chemistry Reviews

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(Carboxylato)(Triphenylphosphine) Complexes of the Platinum Metals

Cited by 13 publications

References 23 publications

Bis(Triphenylphosphine)Platinum Complexes

Bis(Triphenylphosphine)Platinum Complexes

Steuerungsmöglichkeiten bei der übergangsmetall‐katalysierten Umsetzung von 1,3‐Dienen mit Kohlendioxid

Substituted ruthenium carbonyl halides

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