Isomerization of (.pi.-allyl)palladium complexes via nucleophilic displacement by palladium(0). A common mechanism in palladium(0)-catalyzed allylic substitution
Autor: | Jan-E. Bäckvall, Kenneth L. Granberg |
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Rok vydání: | 1992 |
Předmět: | |
Zdroj: | Journal of the American Chemical Society. 114:6858-6863 |
ISSN: | 1520-5126 0002-7863 |
Popis: | Treatment of (π-allyl)palladium complexes such as 6 and 9 with Pd(PPh 3 ) 4 leads to rapid isomerization at -15 o C in tetrahydrofuran and other solvents. At 0 o C and in the presence of more than 2 equiv of triphenylphosphine per palladium, the phosphine attacks the π-allyl group to give allylic phosphonium salts 7 with concomitant formation of a palladium(0)-phosphine complex, and isomerization of 6 is observed |
Databáze: | OpenAIRE |
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