Preparation of dialkyldialkoxysilanes and related compounds

Details Preparation of dialkyldialkoxysilanes and related compounds Preparation of dialkyldialkoxysilanes and related compounds

1986-10-27

1987-07-28

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 718

Patent

active

046833218

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.

REFERENCES:
patent: 2762824 (1956-09-01), Brown
patent: 2857414 (1958-10-01), Schmidt et al.
patent: 3004079 (1961-10-01), Sleddon et al.
patent: 3398171 (1968-08-01), Giraitis et al.
patent: 4595777 (1986-06-01), Bakshi et al.

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