Pericyclic organometallic reactions. The reactions of (cht)Fe(CO)2L (L=CO, P(OPh)3, PPh3) and (carbomethoxy)maleic anhydride revisited
In: Journal of Organometallic Chemistry, Jg. 587 (1999-09-01), S. 81-87
Online
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Zugriff:
Kinetic studies of the reaction of (cht)Fe(CO)2L (L=CO, P(OPh)3, PPh3) and (carbomethoxy)maleic anhydride reveal, contrary to our previous report, that the reactions proceed by a tandem 3+2-cycloaddition-[2,2]-sigmahaptotropic rearrangement, to give the corresponding η2,η2-Diels–Alder adducts as main products, in equilibrium with the primary η1,η3-σ,π-allylic kinetic isomers. The labile primary isomers were characterized by 1H-, 13C- and 31P-NMR spectra. Substitution of carbonyl by phosphorus ligands increased the rates of both cycloadditions and rearrangements in the order PPh3>P(OPh)3>CO.
Titel: |
Pericyclic organometallic reactions. The reactions of (cht)Fe(CO)2L (L=CO, P(OPh)3, PPh3) and (carbomethoxy)maleic anhydride revisited
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Autor/in / Beteiligte Person: | Gottlieb, Hugo E. ; Goldschmidt, Zeev ; Genizi, Elisheva |
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Zeitschrift: | Journal of Organometallic Chemistry, Jg. 587 (1999-09-01), S. 81-87 |
Veröffentlichung: | Elsevier BV, 1999 |
Medientyp: | unknown |
ISSN: | 0022-328X (print) |
DOI: | 10.1016/s0022-328x(99)00282-x |
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