23700-63-2Relevant academic research and scientific papers
Photolysis of Alkynyl(phenyl)iodonium Salts. Remarkable Solvent Effect and Generation of Acids
Kitamura, Tsugio,Tanaka, Toshimasa,Taniguchi, Hiroshi
, p. 2245 - 2248 (1992)
Photolysis of alkynyl(phenyl)iodonium salts in CH2Cl2 resulted in major formation of iodobenzene, while the photolysis in EtOH, Et2O, or THF gave iodoalkynes as the main product.In addition to the organic products, acids were generated almost quantitatively by the photolysis and initiated polymerization of styrene.
Facile Access to Triazole-Fused 3,1-Benzoxazines Enabled by Metal-Free Base-Promoted Intramolecular C-O Coupling
Tatevosyan, Stepan S.,Kotovshchikov, Yury N.,Latyshev, Gennadij V.,Lukashev, Nikolay V.,Beletskaya, Irina P.
supporting information, p. 369 - 377 (2021/10/21)
A convenient approach to assemble 1,2,3-triazole-fused 4 H -3,1-benzoxazines has been developed. Diverse alcohol-tethered 5-iodotriazoles, readily accessible by a modified protocol of Cu-catalyzed (3+2)-cycloaddition, were utilized as precursors of the target fused heterocycles. The intramolecular C-O coupling proceeded efficiently under base-mediated transition-metal-free conditions, furnishing cyclization products in yields up to 96%. Suppression of the competing reductive cleavage of the C-I bond was achieved by the use of Na 2CO 3in acetonitrile at 100 °C. This practical and cost-effective procedure features a broad substrate scope and valuable functional group tolerance.
Oxidative Addition of Alkenyl and Alkynyl Iodides to a AuI Complex
Bower, John F.,Cadge, Jamie A.,Russell, Christopher A.,Sparkes, Hazel A.
supporting information, p. 6617 - 6621 (2020/03/13)
The first isolated examples of intermolecular oxidative addition of alkenyl and alkynyl iodides to AuI are reported. Using a 5,5′-difluoro-2,2′-bipyridyl ligated complex, oxidative addition of geometrically defined alkenyl iodides occurs readily, reversibly and stereospecifically to give alkenyl-AuIII complexes. Conversely, reversible alkynyl iodide oxidative addition generates bimetallic complexes containing both AuIII and AuI centers. Stoichiometric studies show that both new initiation modes can form the basis for the development of C?C bond forming cross-couplings.
ORGANIC ELECTROLUMINESCENCE ELEMENT AND MATERIAL
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Paragraph 0346; 0348, (2020/05/16)
PROBLEM TO BE SOLVED: To provide a phosphorescent metal complex emitting blue light, which shows a low drive voltage, high emission efficiency, high color purity of emission and a long emission life when used for an element, and to provide an organic electroluminescence element containing the above metal complex. SOLUTION: The present invention provides a compound represented by general formula (I): ML1mL2n, and an organic electroluminescence element containing the above compound. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2020,JPOandINPIT
Enantioselective alkynylation of aldehydes with 1-haloalkynes catalyzed by tethered bis(8-quinolinato) chromium complex
Usanov, Dmitry L.,Yamamoto, Hisashi
supporting information; experimental part, p. 1286 - 1289 (2011/04/16)
The first example of Cr-catalyzed asymmetric alkynylation of aldehydes with 1-iodo- and 1-bromoalkynes was developed. The use of tethered bis(8-quinolinato) chromium catalyst (3 mol %) allowed preparation of enantioenriched propargyl alcohols with good yields and enantioselectivities up to 92% ee. 1-Bromoalkynes can be activated by the introduction of a cobalt porphine cocatalyst, which enables shorter reaction times without any loss of enantiocontrol.
Reactions of Terminal Alkynes with Bis(trimethylsilyl) Peroxide and Zinc(II) Iodide: A Convenient Method for the Preparation of 1-Iodo-1-alkynes
Ricci, A.,Taddei, M.,Dembech, P.,Guerrini, A.,Seconi, G.
, p. 461 - 463 (2007/10/02)
A convenient, mild, and general one-pot synthesis of 1-iodo-1-alkynes from terminal acetylenes, bis(trimethylsilyl) peroxide, and zinc(II) iodide in the presence of n-butyllithium is reported.
Reactions of Terminal Alkynes with Iodine in Methanol
Heasley, Victor L.,Shellhammer, Dale F.,Heasley, Lynn E.,Yaeger, David B.,Heasley, Gene E.
, p. 4649 - 4652 (2007/10/02)
Terminal alkynes 1-hexyne (1), tert-butylacetylene (2), and phenylacetylene (3) react with iodine in methanol to give only 1,2-diiodoalkenes.If the reactions are carried out in the presence of silver nitrate, however, diiodo ketones (RC(O)CHI2) and substi
