The first preparation of episulfones from episulfides: Oxidation using oxone®/trifluoroacetone
作者:Paul Johnson、Richard J.K. Taylor
DOI:10.1016/s0040-4039(97)01307-5
日期:1997.8
For the first time, episulfones have been prepared by oxidation of the corresponding episulfides. Seven examples are given, most of which proceed in good to excellent yield. The first oxidation of an episulfoxide to an episulfone is also reported as part of a preliminary mechanistic study.
Novel Episulfone Substitution and Ring-Opening Reactions via α-Sulfonyl Carbanion Intermediates
作者:Nigel S. Simpkins
DOI:10.1080/10426509708545519
日期:1997.1.1
Three-membered cyclic sulfones undergo substitution on treatment with baseelectrophile mixtures, such as LDA-Me3SiCl and tBu-P4-phosphazene base-PhCHO, to give either substituted episulfones or the corresponding alkenes following loss of SO2. In the absence of Me3SiCl, reaction of episulfones with LDA results in ring-opening to give alkenyl sulfinate intermediates, which can be alkylated to give (E)-alkenyl
Efficient Synthesis of Episulfones and of SO<sub>2</sub> with Any Variation of Oxygen Isotopes Using HOF·CH<sub>3</sub>CN
作者:Tal Harel、Elizabeta Amir、Shlomo Rozen
DOI:10.1021/ol060087e
日期:2006.3.1
successfully employed in converting episulfides to episulfones. Unlike other oxidizing agents, no episulfoxides were formed under standard conditions. Reacting H(18)OF.CH(3)CN with either an episulfide or an episulfoxide leads to the corresponding episulfone with all combinations of oxygen isotopes. Decomposition of such episulfones gives any desirable variation of S(18)O(x)()O (x = 16, 18).