Patent Number: 6,169,196

Title: Process for the preparation of alkylsilanes with bulky alkyl radicals

Abstract: A process for the preparation of di- and trialkylsilanes of the general formula (I) in which mono- or dialkylsilanes of the general formula (II) are reacted with alkenes A which have at least 3 carbon atoms and are optionally substituted by fluorine, chlorine or bromine atoms or cyano groups, in the presence of a transition metal catalyst and a trihalogenosilane of the general formula (III) as an activator, wherein, in the above general formulae (I) to (III), R is a branched or cyclic hydrocarbon radical having at least 3 carbon atoms, optionally substituted by fluorine, chlorine, or bromine, or cyano groups, R.sup.1 is an alkyl radical optionally substituted by fluorine, chlorine, or bromine, or cyano groups, R.sup.2 is a hydrogen atom, or an alkyl radical optionally substituted by fluorine, chlorine, or bromine, or cyano groups, X is fluorine, chlorine, or bromine, or an alkoxy radical having 1 to 18 carbon atoms optionally substituted by fluorine, chlorine, or bromine, or cyano groups, Y is fluorine, chlorine or bromine, a is 1 or 2, b is 1 or 2, and c is 1 or 2.

Inventors: Geisberger; Gilbert (Altotting, DE), Lindner; Tassilo (Mehring-Od, DE), Reitmeier; Rudolf (Burghausen, DE)

Assignee: Wacker-Chemie GmbH

International Classification: C07F 7/00 (20060101); C07F 7/14 (20060101); C07F 007/08 ()

Expiration Date: 01/02/2018