Abstract
The hydration of double bonds along the main chain in poly(phenylacetylene) [poly(PA)] was undertaken via hydroboration. Soluble and high-moleular-weight poly(PA)s obtained with WCl6 and MoCl5 as catalysts were used as starting polymers. Hydroboration was usually performed in tetrahydrofuran at 50°C. The degree of hydration reached about 70%. Poly(β-naphthylacetylene) also underwent hydroboration in a similar manner, whereas no reaction took place for poly(1-phenylpropyne) because of steric hindrance. The product from poly(PA) was a white powder soluble in polar solvents such as ethyl acetate, acetone, and phenylethanols which are all non-solvents of poly(PA). The product was characterized by UV, IR, and 13C NMR spectroscopies.
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Masuda, T., Ohtori, T. & Higashimura, T. Hydration of Poly(phenylacetylene)s via Hydroboration. Polym J 11, 849–853 (1979). https://doi.org/10.1295/polymj.11.849
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DOI: https://doi.org/10.1295/polymj.11.849