Molecules organiques coordinees a un metal. : Nouveaux complexes olefiniques d'α-enones par le fer(0) |
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| Authors: | Anne Vessieres Daniel Touchard Pierre Dixneuf |
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| Institution: | Laboratoire de Chimie des Organométalliques, E.R.A. C.N.R.S. no. 477, Université de Rennes, 35031 Rennes-Cédex France |
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| Abstract: | Heterodienetricarbonyliron complexes react with ligands ( L = PMe2Ph, P(OMe)3 or P(OPh)3) to give the adducts (enone)Fe(CO)3L with the ethylenic double bond coordinated only to the iron(0). Electron-releasing and low-steric effects of L make the reaction which is specific for enones easier compared to that for dienes. PMe2Ph allows enone exchange and P(OPh)3 promotes carbonyl elimination. Ligand influence is shown by infrared spectroscopy and by the shielding of ethylenic protons in NMR spectroscopy. |
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