Abstract
Methylvinyloxygermanes, (CH3)4−nGe(OCH=CH2)n (n=1∼3), were synthesized by the reaction of the corresponding methylchlorogermanes and mercuridiace-taldehyde.As a by-product of trimethylvinyloxygermane(n=1), its tautomer, trimethylgermyl-acetaldehyde (CH3)3GeCH2CHO, was found in the reaction mixture, but it did not seem that there is a fast equilibrium between the tautomers.All these vinyloxygermanes were found polymerizable by radical and cationic initiators. The polymers were converted into poly(vinyl alcohol) by methanolysis in the presence of sodium methoxide or simply by the addition of methanol into the polymerization mixture after polymerization.The rate of radical homopolymerization was found to increase with increasing number of vinyloxy groups. The radical polymerization of di- and tri-vinyloxygermanes seemed to involve cyclopolymerization with the formation of a large amount of five-membered rings in addition to six-membered ones.
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Kida, S., Nozakura, Si. & Murahashi, S. The Synthesis and Polymerization of Methylvinyloxygermanes. Polym J 3, 234–241 (1972). https://doi.org/10.1295/polymj.3.234
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DOI: https://doi.org/10.1295/polymj.3.234