Laser Desorption Ionization of Arylene Phenylphosphonites Formed by Condensation of Dihydric Phenols with Phenylphosphonous Bis(diethylamide) |
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Authors: | A T Teleshev B I Maksimov V Yu Mishina I V Abrashina V Ya Grinberg E E Nifant'ev |
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Institution: | (1) Moscow State Pedagogical University, Moscow, Russia |
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Abstract: | Step high-temperature condensation of dihydric phenols 1,4-dihydroxybenzene, 4,4′-dihydroxybiphenyl, and 2,2′-bis(4-hydroxyphenyl)propane] with phenylphosphonous bis(diethylamide) is carried out. The molecular weight, composition, and structure of the resulting oligomeric arylene phenylphosphonites were assessed by means of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The widest mass range was observed in the mass spectrum of 4,4′-dihydroxybiphenyl, which corresponds to an oligomer having about 30 elementary units. The obtained data agree with the the molecular weight measured by high-speed sedimentation. The reactions of phenylphosphonous bis(diethylamide) with dihydric phenols give both acyclic and cyclic arylene phenylphosphonites. |
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