Preparation of sulfur-containing organosilicon compounds

Details Preparation of sulfur-containing organosilicon compounds Preparation of sulfur-containing organosilicon compounds

C - Chemistry, Metallurgy

07

F

C07F 7/18 (2006.01)

Patent

CA 2176680

The present invention relates to a process for the production of organosilicon compounds of the formula Z-Alk-Sn-Alk-Z (I) in which Z is selected from the group consisting of Image , Image and Image where R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; R2 is alkoxy of 1 to 8 carbon atoms, or cycloalkoxy of 5 to 8 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is an integer of 2 to 8; comprising reacting (A) a compound of the formula: Z-Alk-X (II) when X is Cl or Br; with (B) an ammonium hydrosulfide or alkali metal hydrosulfide and (C) sulfur; wherein the reaction is conducted in the presence of a phase transfer catalyst and an aqueous phase.

Méthode pour l'obtention de composés organosiliciés de formule Z-Alk-Sn-Alk-Z (I) où Z est choisi dans le groupe comprenant Image , Image et Image où R1 est un groupe alkyle de 1 à 4 atomes de carbone, un cyclohexyle ou un phényle; R2 est un alcoxy de 1 à 8 atomes de carbones ou un cycloalcoxy de 5 à 8 atomes de carbone; Alk est un hydrocarbure divalent de 1 à 18 atomes de carbone et n un entier de 2 à 8; réaction A) d'un composé de formule Z-Alk-X (II), X étant Cl ou Br, avec B) un sulfhydrate d'ammonium ou un sulfhydrate de métal alcalin et C) du soufre; la réaction est effectuée en présence d'un catalyseur de transfert de phase et d'une phase aqueuse.

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