| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1989: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1988: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Research Abstract |
Hydrosilation reaction is well known in organic synthesis. Here we wish to report the direct use of this reaction in polymer synthesis for the preparation of novel functional polymers.
Polyaddition between bifunctional olefins and bifunctional Si-H com pounds produced a novel type of Si-containing oligomers. As a diolefin component, alpha,omega-diolefins such as 1,6-heptadiene or 1,7-octadiene, diacetylenes, diallyl ethers, diallylamine, and diallyl sulfide were used. As the hydrosilane compounds, dimethylsilane, didhenylsilane, and tetraphenyl-disiloxane were used to produce the corresponding Si-containing oligomers with several thousands molecular weights. The structures of these oligomers were characterized by their IR and NMR spectra and by elemental analyses.
On the other hand, similarly to hydrosilation reaction, a polyaddition between monoalkylborane and diolefin produced organoboron polymers. We termed this "hydroboration polymerization". For example, a polyaddition between thexylborane and 1,7-octadiene was carried out in tetrahydrofuran at 0ﾟC to produce a polymer, which contains C-B bonds in the main chain. By replacing of 1,7-octadiene, bisallyl ethers or diynes such as 1,7-octa- diyne and 3,9-dodecadiyne can be used in this hydroboration polymerization to produce the corresponding organoboron polymers.
Hydroboration polymerization between isophthalonitrile and t-butyl- borane produced the boron-containing polymer by the dimerization of imino- borane species.
The resulting polymers prepared by hydroboration polymerization can be regarded as a polymer homologue of trialkylboranes and can be used as a: novel type of reactive polymers. The reaction with carbon monoxide followed by the treatment with hydrogen peroxide in alkaline solution produced polyalcohols by the rearrangement of C-B bond. The organoboron polymer was also reacted with KCN to produce a polyketone.
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