123775-87-1Relevant academic research and scientific papers
Ytterbium(III)-catalyzed three-component reactions: Synthesis of 4-organoselenium-quinolines
De Oliveira, Isadora M.,Vasconcelos, Stanley S. N.,Barbeiro, Cristiane S.,Correra, Thiago C.,Shamim, Anwar,Pimenta, Daniel C.,Caracelli, Ignez,Zukerman-Schpector, Julio,Stefani, Hélio A.,Manarin, Flávia
, p. 9884 - 9888 (2017)
4-Organoselenium-quinolines were synthesized via model multi-component Povarov (MCR) reactions between p-anisidine, ethyl glyoxylate and ethynyl(phenyl)selane, catalyzed by the Lewis acid Yb(OTf)3, with yields ranging from moderate to good. This method is advantageous in that there is no requirement for an oxidant and that the reaction has a wide scope. These 4-organoselenium-quinolines allowed access to 4-alkynyl-quinolines, which were synthesized via copper free Sonogashira cross-coupling reactions catalyzed by a new palladium catalyst that employs an oxazoline derivative as a ligand. A plausible mechanism was proposed based on HRMS studies.
Synthese und Koordinationsverhalten von Selenoalkinylen R-Se-CC-R'
Lang, Heinrich,Keller, Holger,Imhof, Wolfgang,Martin, Sabine
, p. 417 - 422 (2007/10/02)
Synthesis and Coordination Ability of Selenoalkynes R-Se-CC-R' Several synthetic methods for the preparation of selenoalkynes R-Se-CC-R'(1) are discussed. 1 reacts with octacarbonyl dicobalt to yield the η2-?-side-on coordinated alkyne complexes R-Se2-CC-R')Co2(CO)6> (8) which contain a sterically hindered carbon-cobalt tetrahedrane cluster unit.The identity of compounds 1 and 8 is documented by analytical and spectroscopic (IR, MS, 1H-, 77Se-, and 13C-NMR) data as well as by X-ray analysis of C6H5-Se2-CC-C6H5)Co2(CO)6> (8a).
