Patent ID: 7956210

Claim:
A process for preparing silanes of the formula I which comprises reacting compounds of the formula II with alkenes of the formula III R 5 R 6 C═CHR 4 (III), in the presence of at least one iridium compound catalyst of the formula IV [( en )IrCl] 2 (IV), where “en” is an open-chain, cyclic or bicyclic compound having at least one double bond of the formula V in the presence of at least one polymeric cocatalysts comprising structural units of the formulae VI-VIII cis double bonds trans double bonds where R 1 , R 2 , R 3 are each individually a hydrocarbon, chlorine, or an alkoxy radical optionally substituted by F, Cl or Br, having from 1 to 18 carbon atoms optionally interrupted by nonadjacent —O— groups, R 4 , R 5 , R 6 are each individually hydrogen or a hydrocarbon radical optionally substituted by F, Cl, OR, NR′ 2 , CN or NCO and having from 1 to 18 carbon atoms optionally interrupted by nonadjacent —O— groups, where 2 or 3 radicals R 4 , R 5 , R 6 optionally form a cyclic compound, R 7 is hydrogen or a hydrocarbon radical optionally substituted by F, Cl, OR, NR′ 2 , CN or NCO and has from 1 to 18 carbon atoms optionally interrupted by nonadjacent —O— groups, where 2 radicals R 7 optionally form a cyclic compound, R 8 is hydrogen or a hydrocarbon radical optionally substituted by F, Cl, OR, NR′ 2 , CN or NCO and has from 1 to 1000 carbon atoms optionally interrupted by nonadjacent —O— groups, R 9a , R 9b are each hydrogen or a hydrocarbon radical optionally substituted by F, Cl, OR, NR′ 2 , CN or NCO and having from 1 to 18 carbon atoms optionally interrupted by nonadjacent —O— groups, where two or three radicals R 9a , R 9b , R 9c , R 9d optionally form a cyclic compound, R′ is hydrogen or a hydrocarbon radical optionally substituted by F, Cl or Br and having from 1 to 18 carbon atoms optionally interrupted by nonadjacent —O— groups, l, m are integers from 3 to 5000.