Preparation of dialkyldialkoxysilanes and related compounds
US4683321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1986 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Oct 27, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/1876
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkali metal aluminum tetraalkyls can alkylate tetraalkyl silicates and alkyltrialkoxysilanes, Si(OR).sub.4 and RSi(OR).sub.3, respectively. The product in each case is predominately the dialkylate. With tetraalkyl silicates, both of the alkyl groups bonded to silicon in the dialkylate product are derived from the metal tetraalkyl. With alkyltrialkoxysilanes, the silicon atom in the dialkylate product is (a) bonded to one alkyl group detained from the metal tetraalkyl, and (b) is also bonded to an alkyl group--that was bonded to silicon--in the silicon-containing starting material. Thus, the alkyl groups in the dialkylate product that are bonded to silicon can be alike or different. The dialkyldialkoxysilane products produced by this invention can be reduced to the corresponding silanes; e.g., R.sub.2 SiH.sub.2, by using an alkyl aluminum tetrahydride as the reducing agent. The dialkyldialkoxysilanes as well as the dialkylsilanes produced are useful as chemical intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.