Process for preparing organosilylalkyl polysulfanes
Production of organosilylalkyl polysufides (I) by reacting an organosilylalkyl halide (II) with an anhydrous ionic sulfide (III) and elemental sulfur comprises adding (III) to a suspension of elemental sulfur and (II) in a polar organic solvent. Production of organosilylalkyl polysufides of formula...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
11.09.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | Production of organosilylalkyl polysufides (I) by reacting an organosilylalkyl halide (II) with an anhydrous ionic sulfide (III) and elemental sulfur comprises adding (III) to a suspension of elemental sulfur and (II) in a polar organic solvent. Production of organosilylalkyl polysufides of formula (I) by reacting an organosilylalkyl halide of formula (II) with an anhydrous ionic sulfide of formula (III) and elemental sulfur comprises adding (III) to a suspension of elemental sulfur and (II) in a polar organic solvent: (R 1>R 2>R 3>SiR 4>)S x (I) , R 1>R 2>R 3>SiR 4>X (II) and M 2S (III) R 1>-R 3>1-8C alkyl, 1-8C alkoxy or aryl, at least one being alkoxy; R 4>1-8C alkylene or (CH 2) n-C 6H 4-(CH 2) n; n : 1-4; x : more than 1; X : Cl, Br or I; M : an alkali metal or ammonium cation or half an alkaline earth metal or zinc cation. |
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Bibliography: | Application Number: EP20010103386 |