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Oxidation of Substituted Phosphanylboranes with Chalcogens

机译:用胆酸的取代磷酸磺酰硼烷氧化

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摘要

The elemental chalcogens sulfur, selenium, tellurium and bis(trimethylsilyl)peroxide as an oxygen source are applied for the oxidation of the phosphanylboranes Ph2PBH2 ·NMe_3 (1) and tBuHP-BH_2·NMe_3 (2). The corresponding monooxidation products Ph_2P(X)-BH_2·NMe_3 (X=O-Te, 3a-d) and tBuHP(X)-BH_2·NMe_3 (X=O-Te, 4a-d) were obtained in good yields and comprehensively characterized by single crystal X-ray structure analysis, NMR, IR spectroscopy and mass spectrometry. The first oxidation step proceeds very selectively for all chalcogenides. For the tBu derivative, a further oxidation can be realised with O_2, S_8 and Se yielding tBu(HX)P(X)-BH_2·NMe_3 (X=O, S, Se, 5a-c). The telluride compounds presented herein are the first examples of neutral Te-substituted phosphanylboranes.
机译:作为氧源的元素硫酸硫,硒,碲和双(三甲基甲硅烷基)用于氧源PH2PBH2·NME_3(1)和TBUHP-BH_2·NME_3(2)的氧化。 相应的单氧化产物pH_2p(x)-bh_2·nme_3(x = o-te,3a-d)和tbuhp(x)-bh_2·nme_3(x = o-te,4a-d)以良好的产量和全面地获得 特征在于单晶X射线结构分析,NMR,IR光谱和质谱。 第一氧化步骤非常有选择性地为所有硫属化物进行。 对于TBU衍生物,可以用O_2,S_8和SE实现进一步的氧化,得到TBU(HX)P(X)-BH_2·NME_3(X = O,S,SE,5A-C)。 本文提出的碲化物化合物是中性TE-取代的磷酰硼烷基的第一实施例。

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