Silacyclobutene compounds, methods of preparing same, and polyme

Details Silacyclobutene compounds, methods of preparing same, and polyme Silacyclobutene compounds, methods of preparing same, and polyme

1999-04-23

2000-11-28

Shaver, Paul F.

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

Organic compounds

Silicon containing

528 32, 526279, C07F 708

Patent

active

061537810

ABSTRACT:
A silacyclobutene compound having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently chloro, triorganosiloxy, organooxy, triorganosilyl, or a monovalent hydrocarbon group; R.sup.3 is a monovalent hydrocarbon group free of conjugated aliphatic unsaturation or triorganosilyl; R.sup.5 is hydrogen or a monovalent hydrocarbon group free of conjugated aliphatic unsaturation; and R.sup.4 and R.sup.6 are independently hydrogen or a monovalent hydrocarbon group free of conjugated aliphatic unsaturation or together are an alkanediyl group, wherein the alkanediyl group and the carbon atoms to which it is attached form a carbocyclic ring having 4 to 7 carbon atoms; provided that R.sup.3 is not aryl. Methods of preparing the silacyclobutene compounds, silane polymers containing at least one silacyclobutene unit, and siloxane polymers containing at least one silacyclobutene unit.

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Angew. Chem. Int. Ed. Engl. 30 (May 1991) No. 9, Auner et al., 1151-1152.
Chem. Ber. Jun. 1993, 126, Auner et al., 2177-2186.

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