C. Alvareztoledano et al., SYNTHESIS OF A NEW IRON TRICARBONYL (ETA(4))-ALPHA-PYRONE COMPLEX BY REACTION OF IRON VINYLDIKETONE COMPLEXES WITH METHYLLITHIUM UNDER A COATMOSPHERE, Journal of organometallic chemistry, 549(1-2), 1997, pp. 49-54
The reaction between a new (eta(4))-trans-1,2-alpha,beta-unsaturated d
iketone-Fe(CO)(3) complex derived from trans-1,2-dibenzoylethylene or
the corresponding (eta(2))-Fe(CO)(4) complex with MeLi under a CO atmo
sphere leads to the formation of an (eta(4))-alpha-pyrone-Fe(CO)(3) co
mplex 3 via the respective (eta(4))-ketene-Fe (O) complex. The structu
re of the complex was determined by mass spectrometry, IR, H-1 and C-1
3 NMR spectroscopies and was confirmed by X-ray diffraction studies. (
C) 1997 Elsevier Science S.A.