- A convenient synthesis of 1,3-disilacyclobutanes
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Flash vacuum pyrolysis of bis(trimethylsilylmethyl)methoxysilanes was found to be an efficient route to 1,3-disilacyclobutanes.Flash vacuum pyrolysis of bis(trimethylsilylmethyl)dimethoxysilane or bis(trimethylsilylmethyl)chloromethoxysilane gave 1-methoxy-1,3,3-trimethyl-1,3-disilacyclobutane or 1-chloro-1,3,3-trimethyl-1,3-disilacyclobutane, respectively.The thermolysis is regarded as proceeding through initial β-elimination of trimethylmethoxysilane followed by intramolecular cyclization of the resulting 2-methoxy-4,4-dimethyl-2,4-disilapent-1-ene or 2-chloro-4,4-dimethyl-2,4-disilapent-1-ene to give the products.
- Hong, Jang-Hwan,Han, Joon Soo,Lee, Gyu-Hwan,Jung, Il Nam
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- 1,3-disilacyclobutanes and the method for producing thereof
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The present invention relates to a process for preparing 1,3-disilacyclotutanes by pyrolyzing alkoxytrisilaalkaness at a temperature of from 400° C. to 800° C. at the atmospheric pressure or under the vacuum. This is a new synthetic route of 1,3-disilacyclobutanes which employs readily available starting materials without using alkaline metals or magnesium, affords very good yields, produces very clean product mixtures separable by distillation, and tolerates functionality on silicon.
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