106799-29-5Relevant academic research and scientific papers
Michael Adducts of (Alkynylcarbene)pentacarbonylchromium Complexes: Formation, Stereochemistry, and Thermal Rearrangement
Duetsch, Michael,Stein, Frank,Lackmann, Rolf,Pohl, Ehmke,Herbst-Irmer, Regine,Meijere, Armin de
, p. 2051 - 2066 (2007/10/02)
β-Donor-substituted α,β-unsaturated chromium carbene complexes (CO)5CrC(OEt)C=CR(XR'n) (X = N, O, S; 3, 9, 11-16, 22-25) have been synthesized by Michael addition of amines, alcohols, and thiols to alkynylcarbene complexes (CO)5CrC(OEt)C=-CR (1).The configurations of the newly formed C-C double bonds have been determined by NOE/NOESY measurements and X-ray crystal structure analysis.These vinylcarbene complexes lose one carbonyl ligand in refluxing tetrahydrofuran to give tetracarbonyl complexes (CO)4CrC(OEt)C=CR(XR'n) (X = N, O, S; 26-28). Key Words: Chromium, alkynylcarbene complexes / Vinylcarbenechromium complexes, β-donor-substituted / Carbene complexes, vinyl chelated
