13818-38-7Relevant articles and documents
Process for preparing organosilanes
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Page/Page column 37, (2008/06/13)
Preparation of organosilane compound (I) comprises reaction of (halo-organo) alkoxysilane compound (II) with sulfurizing agent (alkali hydrogensulfide, metal sulfide and/or metal polysulfide) and optionally in addition with sulfur or hydrogen sulfide in alcohol. Preparation of organosilane compound (I) of formula (Si (R) 2(R1O)(R2)-) nX m comprises reaction of (halo-organo)alkoxysilane compound (II) of formula (Si (R) 2(R1O)(R2)-Hal) with sulfurizing agent (alkali hydrogensulfide (3 wt.%), metal sulfide (Me 2S) and/or metal polysulfide (Me 2S g) (10 wt.%)) and optionally in addition with sulfur or hydrogen sulfide in alcohol. R : 1-8C-alkyl, 1-8C-alkenyl, 1-8C-aryl, 1-8C-aralkyl or OR1; R 1>1-24C-alkyl or alkenyl, aryl, aralkyl, H, alkylether O-(CR 3> 2)-O-alk, O-(CR 3> 2) y-O-alk or alkylpolyether O-(CR 3> 2O) y-alk or O- (CR 3> 2CR 3> 2-O) y-alk; y : 2-20; R 3>H or alkyl; alk : optionally saturated, linear, aliphatic and/or aromatic 1-30C-hydrocarbon; R 2>alk optionally substituted with halo, H, NH 2 or NHR 1>; either X : S; or X : SH; Hal : Cl, Br, F or I; Me : alkali metal, NH 4 or (alkaline earth metal) 1/2; and g : 1, 5-8 or 0. Provided that when n is 2 and m with an average sulfur chain length of 1.5-4.5, then X is S and when n is 1 and m is 1, then X is SH.
