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First reusable ligand-free palladium catalyzed C-P bond formation of aryl halides with trialkylphosphites in neat water

机译:首次在纯水中可重复使用的不含配体的钯催化芳基卤化物与亚磷酸三烷基酯的C-P键形成

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摘要

A reusable ligand-free palladium catalyzed phosphonation of aryl iodides, bromides and chlorides with trialkylphosphites is described for the first time in neat water. The aryl phosphonates are obtained in good to excellent yields. The reaction can be also performed with Ni(II) with longer reaction time. The role of tetrabutylammonium bromide in this reaction as reducing agent for generation of Pd(0) at room temperature is also demonstrated. Pd(0)/TBAB was easily reused for three runs without decreasing the efficiency.
机译:首次在纯净水中描述了可重用的无配体的钯催化的芳基碘,溴化物和氯化物与亚磷酸三烷基酯的膦酸化反应。以良好至优异的产率获得芳基膦酸酯。该反应还可以用Ni(II)以更长的反应时间进行。还证明了溴化四丁铵在该反应中作为还原剂的作用,该还原剂在室温下可生成Pd(0)。 Pd(0)/ TBAB可以轻松地重复使用三轮,而不会降低效率。

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