164990-17-4Relevant academic research and scientific papers
Substituted Tetraethynylethylene–Tetravinylethylene Hybrids
Connor, Kieran P. E.,Horvath, Kelsey L.,Magann, Nicholas L.,Sherburn, Michael S.,Sowden, Madison J.,Westley, Erin
, p. 977 - 986 (2022/02/03)
A general synthetic approach to molecular structures that are hybrids of tetraethynylethylene (TEE) and tetravinylethylene (TVE) is reported. The synthesis permits the controlled preparation of many previously inaccessible structures, including examples w
Synthesis of Polyynes Using Dicobalt Masking Groups
Kohn, Daniel R.,Gawel, Przemyslaw,Xiong, Yaoyao,Christensen, Kirsten E.,Anderson, Harry L.
, p. 2077 - 2086 (2018/02/23)
Extended triisopropylsilyl end-capped polyynes have been prepared from the corresponding tetracobalt complexes by removing the complexed dicobalt tetracarbonyldiphenylphosphinomethane (Co2(CO)4dppm) moieties. Unmasking of this "masked alkyne equivalent" was achieved under mild conditions with elemental iodine at room temperature, making it possible to obtain fragile polyynes with up to 20 contiguous sp-hybridized carbon atoms. The Co2(CO)4dppm moiety has a strong geometric and steric effect on the polyyne but does not have a marked electronic effect on the terminal alkyne, as indicated by NMR and IR spectroscopy, density functional theory calculations, and X-ray crystallography. An unusual "alkyne hopping" migration of the dicobalt group was noticed as a minor side reaction during copper-catalyzed Eglinton coupling.
2. Tetraethynylethenes: Fully Cross-Conjugated ?-Electron Chromophores and Molecular Scaffolds for All-Carbon Networks and Carbon-Rich Nanomaterials
Anthony, John,Boldi Armen M.,Rubin, Ives,Hobi, Markus,Gramlich, Volker,et al.
, p. 13 - 45 (2007/10/02)
The preparation of tetraethynylethene (3,4-diethynylhex-3-ene-1,5-diyne) 1 as well as of a great diversity of differentially mono-, di-, and triprotected derivatives by newly developed synthetic routes is described.These fully cross-conjugated molecules a
