Zur Synthese und Funktionalisierung neuer Poly[(silylen)‐2,5‐thiophene] |
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Authors: | Wolfram Uhlig |
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Abstract: | Treatment of 2,5‐dilithiothiophene with (dimethylamino) methylsilylbis(triflates) gave poly[(dimethylamino‐silylene)‐2,5‐thiophene] 4 in high yield. The amino–silyl bond was cleaved selectively by triflic acid leading to triflate substituted poly[(silylene)‐2,5‐thiophene] 5 . Conversions of this polymers with nucleophiles gave other functionalized derivatives 6 – 9 . Hydrosilylation reaction between silicon–vinyl and silicon–hydrogen derivatives results in polymer networks which may serve as interesting preceramic materials. The structures of the polymers were proven by NMR spectroscopy (29Si, 13C, 1H). |
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Keywords: | polymers silicon polycondensation poly[(silylene)‐2,5‐thiophene]s silyl triflates |
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