33923-89-6Relevant academic research and scientific papers
Radical Cation Cycloadditions Using Cleavable Redox Auxiliaries
Lin, Shishi,Lies, Shane D.,Gravatt, Christopher S.,Yoon, Tehshik P.
, p. 368 - 371 (2017)
The incorporation of an easily oxidized arylsulfide moiety facilitates the photocatalytic generation of alkene radical cations that undergo a variety of cycloaddition reactions with electron-rich reaction partners. The sulfide moiety can subsequently be reductively cleaved in a traceless fashion, affording products that are not otherwise directly accessible using photoredox catalysis. This approach constitutes a novel oxidative “redox auxiliary” strategy that offers a practical means to circumvent a fundamental thermodynamic limitation facing photoredox reactions.
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.
