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'< Alkoxycarbonylmethylene' in keywords Facet   Publication Year 1978  [X]
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1Author    WolfgangA. Herrmann, Ilona SchweizerRequires cookie*
 Title    Übergangsmetall-Methylen-Komplexe, VI [1] Zur irreversiblen -Methylen/Carbonyl-Isomerie zweikerniger Cobalt-Komplexe mit bifunktionellen Methylen-Liganden Transition Metal Methylene Complexes, VI [1] On the Irreversible //-Methylene/Carbonyl Isomerization of Binuclear Cobalt Complexes with Bifunctional Methylene Ligands  
 Abstract    Ethyl diazoacetate (2 a) and £erZ-butyl diazoacetate (2 b) are converted into the metal stabilized, doubly bridging alkoxycarbonyl carbenes upon photolysis with (r? 5 -C5H5)Co(CO)2 (1) in tetrahydrofurane at —110°C. Although the yields of //-dicarbonyl-/(-ethoxy-carbonylmethylene-bis(?7 5 -cyclopentadienylcobalt) (3 a) and the corresponding ieri-butyl derivative (3b) are low, both compounds attract considerable attention due to an un-expected and hitherto unknown irreversible carbonyl bridge opening process with concomitant //-methylene rearrangement. These isomerizations have been established by IR and 1 H NMR methods to be first order intramolecular processes. 
  Reference    Z. Naturforsch. 33b, 1128—1135 (1978); eingegangen am 6. Juli 1978 
  Published    1978 
  Keywords    /<-Alkoxycarbonylmethylene, Terminal/Bridging Carbonyl Groups, Cobalt, IR, X H NMR 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1128.pdf 
 Identifier    ZNB-1978-33b-1128 
 Volume    33