Preparation of sulfur-containing organosilicon compounds
US5583245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1996 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/1892
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the production of organosilicon compounds of the formula EQU Z-Alk-S.sub.n -Alk-Z (I) in which Z is selected from the group consisting of ##STR1## where R.sup.1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; PA1 R.sup.2 is alkoxy of 1 to 8 carbon atoms, or cycloalkoxy of 5 to 8 carbon atoms; PA1 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: EQU Z-Alk-X (II) PA1 when X is Cl or Br; with (B) an ammonium hydrosulfide or alkali metal hydrosulfide and (C) sulfur; PA1 wherein the reaction is conducted in the presence of a phase transfer catalyst and an aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.