38704-79-9Relevant academic research and scientific papers
Preparation of tricarbonyl(η4-vinylketene)iron(0) complexes from tricarbonyl(η4-vinyl ketone)iron(0) complexes and their subsequent conversion to tricarbonyl(η4-vinylketenimine)iron(0) complexes
Alcock, Nathaniel W.,Richards, Christopher J.,Thomas, Susan E.
, p. 231 - 238 (2008/10/08)
Reaction of tricarbonyl(η4-vinyl ketone)iron(0) complexes (CO)3(PhCH=CHC(R)=O)Fe(O) (R = Me, 1; Bun, 3; But, 5; Ph, 7) with organolithium reagents under an atmosphere of carbon monoxide gave products that were identified as tricarbonyl (η4-vinylketene) iron(0) complexes (CO)3(PhCH=CHC(R)=C=O)Fe(0) (R = Me, 2; Bun, 4; But, 6; Ph, 8) based on a crystal structure analysis of 2. Complex 2 crystallizes in space group P21/c with a = 13.998 (6) A?, b = 7.955 (5) A?, c = 12.935 (5) A?, β = 113.04 (3)°, and Z = 4. A reaction pathway that postulates the intermediacy of a tricarbonyl(η3-vinylcarbene)iron(0) complex, 20, is discussed. Heating the tricarbonyl(η4-vinylketene)iron(0) complexes 6 and 2 with either tert-butyl, cyclohexyl, or 2,6-xylyl isocyanide at 80°C gave tricarbonyl (η4-vinylketenimine) iron(0) complexes (CO)3(PhCH=CHC(R1)= C=NR2)Fe(0) (R1 = R2 = But, 23; R1 = Me, R2 = But, 24; R1 = Me, R2 = C6H11, 25; R1 = Me, R2 = (2,6-Me2)C6H3, 26) via intermediate dicarbonyl(isocyanide)(η4-vinylketene)iron(0) complexes. The intermediacy of tricarbonyl(isocyanide)(η1-vinylcarbene)iron(0) complexes in this reaction is proposed.
Conversion of α,β-Unsaturated Ketone Complexes into α,β-Unsaturated Ketene Complexes
Alcock, Nathaniel W.,Danks, Timothy N.,Richards, Christopher J.,Thomas, Susan E.
, p. 21 - 22 (2007/10/02)
Treatment of (α,β-unsaturated ketone)tricarbonyliron(0) complexes with organolithium reagents under an atmosphere of carbon monoxide gave products which were identified as (α,β-unsaturated ketene)tricarbonyliron(0) complexes based on a crystal structure a
