91791-00-3Relevant articles and documents
Preparation of 3-Substituted 4-Thianones and Their 1,1-Dioxides via Palladium Mediated Deallyloxycarbonylation
Casy, Guy,Sutherland, Alan G.,Taylor, Richard J. K.,Urben, Peter G.
, p. 767 - 769 (2007/10/02)
3-Alkyl-4-thianones 4 (3-alkyl-thiacyclohexan-4-ones) can be conveniently prepared by the alkylation of 3-allyloxycarbonyl-4-thianone (1b) followed by deallyloxycarbonylation mediated by tetrakis(triphenylphospine)palladium in the presence of morpholine.The corresponding sulphones 9, as well as 2,3-dialkyl-4-thianone derivatives 12 and 13 can be prepared by analogous procedures.
S-Alkyl-4-oxothianium Ions for the Synthesis of Cyclopentenones. Acid-Catalyzed Cyclization of Divinyl Ketones
Matsuyama, Haruo,Takei, Yuji,Kobayashi, Michio
, p. 2657 - 2659 (2007/10/02)
A new approach to 2-cyclopentenones via an acidic cyclization of divinyl ketones by the use of S-alkyl-4-oxothianium ions as key compounds is described.