Patent ID: 8580994

Claim:
A process for preparing a haloalkylalkoxysilane, the process comprising: reacting a silane of formula (II), wherein each R 1 and R 3 are independently alkyl groups having from 1 to 6 carbon atoms and n has a value of 0, 1 or 2, with an alkenylhalide compound of formula (III), wherein R 2 is hydrogen or an alkyl group having from 1 to 6 carbon atoms; X is chloro, fluoro, bromo, or iodo; and z is an integer from 1 to 5, in the presence of a catalytic amount of and iridium containing catalyst having formula (V): wherein Q is selected from 1,3-butadiene, 1,3-hexadiene, 1,3-cyclohexadiene, 1,3-cyclooctadiene, 1,5-cyclooctadiene and norbornadiene; R 4 is independently hydrocarbyl, halohydrocabyl, cyanoalkyl, alkoxy, cyanoalkoxy, amino, or hydrocarbyl-substituted amino; R 5 is independently hydrogen, hydrocarbyl, halohydrocarbyl, or acyl; and R 6 is independently hydrocarbyl, halohydrocarbyl, or cyanoalkyl, wherein the reacting is conducted under an atmosphere containing <5% (v/v) oxygen.