Reaction of lithium dimethyl cuprate with carbonyl iron α,β-unsaturated ketone complexes: The structure of a novel η3,η 3-[(1,6-diphenyl)-3,4-(distyr-1-yl)-1,3,5-hexatriene]-Fe(CO) 2 complex

Article abstract of DOI:10.1016/S0277-5387(97)00052-1

The reaction between η⁴-α,β-unsaturated ketone-Fe(CO)₃ complexes and Me₂CuLi in the absence of CO atmosphere yields the corresponding η⁴-vinylketene complexes 2, 4 and 6. The reaction between η²-dibenzylideneacetone-Fe(CO)₄ and Me₂CuLi gives a new dimeric complex 8, which was characterized by mass spectrometry, IR, ¹H and ¹³C NMR spectroscopy and its structure confirmed by single-crystal X-ray analysis.