Abstract

When platinum(II)—olefin complexes, such as cis-[(PPhEt 2) PtCl 2 (C 2H 4)], are treated with methoxide ions three reactions occur, namely (i) nucleophilic attack on the coordinated olefin to yield an unsaturated methyl ether, (ii) substitution of the olefin by methoxide ion and decomposition of the resulting methoxy complex to formaldehyde and (iii) displacement of the olefin and formation of [(PPhEt 2)PtCl 2] 2. The relative importance of these three reactions depends upon the precise experimental conditions. The implications of the present results for mechanistic studies of the reactions of coordinated olefins with nucleophiles are discussed.

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