Process for preparing silacycloalkanes

Details Process for preparing silacycloalkanes Process for preparing silacycloalkanes

1990-06-01

1990-11-27

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 708

Patent

active

049737236

ABSTRACT:
The present invention is a process for reducing the content of halogen bound to the silicon atom of halosilacycloalkanes. The process employs an alkylaluminum hydride as a reducing agent. Alkylaluminum hydrides have been found to be highly effective in removing the halogen bound to silicon, with lessor affect on the reactive silacycloalkane ring. In another embodiment of the present invention, the halosilacycloalkane is added beneath the surface of an excess of liquid alkylaluminum hydride. The temperature and the pressure of the reaction are maintained such that the resultant silacycloalkane products are immediately vaporized and removed from the reaction vessel. This minimizes further reaction of products and improves the yield of desired product.

REFERENCES:
patent: 2607791 (1952-08-01), Goodwin
patent: 3100788 (1963-08-01), Jenkner
patent: 3445495 (1969-05-01), Nelson
patent: 3899523 (1975-08-01), Seyfertle et al.
patent: 4328350 (1982-05-01), Guselnikov et al.
patent: 4499020 (1970-03-01), Robinson
patent: 4866153 (1989-09-01), Bortolin et al.
Laane, Synthesis of Silacyclobutane and Some Related Compounds, J. Am. Chem. Soc. 89:1144, 1967.

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