Preparation of hydrogenosilanes by redistribution
US4746752A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/125
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hydrogenated silanes are facilely prepared by redistribution, by reacting (1) a silane having the formula H.sub.m SiX.sub.4-m in which X is halogen or an alkoxy group and m is an integer equal to 0, 1, 2 or 3, with (2) an alkyl or aryl hydrosilane having the formula R.sub.n H.sub.p SiX'.sub.4-(n+p) in which X' is halogen or an alkoxy group, R is an alkyl or aryl group and n and p, which may be identical or different, are integers equal to 1, 2 or 3, with the proviso that n+p.ltoreq.4, in the presence of (3) a catalytically effective amount of a catalyst comprising (i) a quaternary ammonium salt having the formula R'.sub.4 NY or a quaternary phosphonium salt having the formula R'.sub.4 PY, in which formulae R', which may be identical or different, are each a monovalent hydrocarbon radical and Y is halogen, (ii) a tertiary amine of the general formula NR'R"R"', in which R', R" and R"', which may be identical or different, are monovalent hydrocarbon radicals, or (iii) an ion exchange resin comprising tertiary amine or quaternary ammonium groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.