A synthetic cycle for H2/CO activation and allene synthesis using recyclable zirconium complexes.
A synthetic cycle for H2/CO activation and allene synthesis using recyclable zirconium complexes.
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DOI：
10.1021/ja0567079
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发表时间：
2005-11
影响因子：
15
通讯作者：
Tsukasa Matsuo;H. Kawaguchi
中科院分区：
文献类型：
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作者：
Tsukasa Matsuo;H. Kawaguchi
由苯甲醚桥联的双（酚盐）配体负载的锆配合物可作为一种易于回收的助剂，在温和条件下将 H2 和 CO 转化为丙二烯和六甲基二硅氧烷。锆苄基络合物氢解，然后用 CO 处理，导致氧桥络合物和丙二烯的形成。用三甲基甲硅烷基三氟甲磺酸酯和三甲基甲硅烷基氯将所得氧桥络合物脱氧，随后用苄基氯化镁处理，重新形成起始苄基络合物。
The zirconium complexes supported by the anisole-bridged bis(phenoxide) ligands serve as an easily recycled auxiliary for converting H2 and CO into allene and hexamethyldisiloxane under mild conditions. Hydrogenolysis of the zirconium benzyl complexes followed by treatment with CO led to formation of oxo-bridged complexes and allene. Deoxygenation of the resulting oxo-bridged complexes with trimethylsilyltrifluoromethanesulfonate and trimethylsilyl chloride and subsequent treatment with benzylmagnesium chloride re-formed the starting benzyl complexes.