Process for the preparation of perhaloalkylthioethers
申请人:Rhone-Poulenc Agrochimie
公开号:US05082945A1
公开(公告)日:1992-01-21
The present invention relates to a process for the preparation of perhaloalkylthioethers by bringing a perhaloalkyl halide, preferably a bromide or an iodide, into contact with a disulphide in the presence of zinc and of sulphur dioxide or of a dithionite or of a hydroxymethanesulphinate or of a formate anion and sulphur dioxide.
Reactions of bromotrifluoromethane and related halides Part VII [1] Condensations with thiocyanates and isocyanates in the presence of zinc
作者:M. Tordeux、C. Francese、C. Walkselman
DOI:10.1016/s0022-1139(00)81634-6
日期:1989.4
Reaction of zinc and bromotrifluoromethane, or perfluoroalkyl-iodides, with thiocyanates and isoyanates gives respectively trifluoromethylsulfides and substituted trifluoroacetamides, as well as their long chain analogs.
The Preparation of Aliphatic Fluorinated Sulfoximines
作者:Claude Wakselman、Emmanuel Magnier
DOI:10.1055/s-2003-37651
日期:——
This work describes the preparation of an aliphatic series of the N-trifluoromethanesulfonyl-S-trifluoromethyl-S-sulfoximine group. The key step of the synthesis is the imination of fluorinated sulfoxides under experimental conditions, which avoid cleavage of the alkyl group. The formation of sulfoximines 6 and 15 allows the preparation of various fluorinated sulfoximines having strong electron withdrawing
Perfluoroalkyl derivatives of sulphur. Part XVIII. Reactions of polyfluoroiodoalkanes with sodium methanethiolate in the presence of dimethyl disulphide, and related reactions
作者:Barry Haley、Robert N. Haszeldine、Barry Hewitson、Anthony E. Tipping
DOI:10.1039/p19760000525
日期:——
the presence of dimethyl disulphide in dimethyl sulphoxide as solvent gives the corresponding methyl polyfluoroalkyl sulphides in high yield (ca. 80%); optimum conditions for the reaction involving heptafluoro-1-iodopropane have been determined. The reaction also works in the absence of the disulphide (yields ca. 70%) and on replacement of the disulphide by dimethyl sulphide. The reactions of hepta