82296-87-5Relevant articles and documents
DES as a green solvent to prepare 1,2-bis-organylseleno alkenes. Scope and limitations
Lopes, Eric F.,Gon?alves, Lóren C.,Vinueza, Julio C.G.,Jacob, Raquel G.,Perin, Gelson,Santi, Claudio,Lenard?o, Eder J.
supporting information, p. 6890 - 6895 (2015/11/27)
We describe here our results on the use of choline chloride/urea 1:2 as a deep eutectic solvent (DES) in the synthesis of vinyl selenides. A good selectivity for the (E)-1,2-bis-organylseleno alkenes was observed starting from terminal alkynes and diaryl
Cerium(III)-mediated efficient and steroselective hydrochalcogenation of terminal alkynes
Silveira, Claudio C.,Mendes, Samuel R.,Rosa, Daniel D.,Zeni, Gilson
experimental part, p. 4015 - 4021 (2010/03/24)
Vinylic chalcogenides were synthesized stereospecifically by hydrochalcogenation of propargylic amines or alcohols mediated by cerium(III) chloride. The products were obtained in good yields and with high regio- and stereoselectivities. Georg Thieme Verla
A simplified preparation of vinyl sulfides, selenides and tellurides by a Wittig-type reaction
Silveira, Claudio C.,Begnini, Mauro L.,Boeck, Paula,Braga, Antonio L.
, p. 221 - 224 (2007/10/03)
The preparation of several vinyl sulfides, selenides and tellurides by Wittig-type reaction in a one-pot procedure is described. The chalcogenyl triphenylphosphoranes 3 are formed 'in situ' by the reaction of chloromethyl phenyl chalcogenide, potassium tert-butoxide and triphenylphosphine. Reaction of 3 with carbonyl compounds affords the vinyl chalcogenides 6-9 with preferential Z-configuration.