Syntheses of a Novel Fluorinated Trisphosphinoborate Ligand and Its Copper and Silver Complexes. Catalytic Activity toward Nitrene Transfer Reactions

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• 作者：Ismael Arenas ; M. 脕ngeles Fuentes ; Eleuterio 脕lvarez ; Yolanda D铆az ; Ana Caballero ; Sergio Castill贸n ; Pedro J. P茅rez
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：April 21, 2014
• 年：2014
• 卷：53
• 期：8
• 页码：3991-3999
• 全文大小：500K
• 年卷期：v.53,no.8(April 21, 2014)
• ISSN：1520-510X

文摘

A novel fluorinated ligand, the anionic PhB(CH₂P(p-CF₃C₆H₄)₂)₃ (PhBP₃ ^p-CF3Ph), has been synthesized and characterized, as well as its corresponding thallium, copper, and silver derivatives. The presence of fluorine atoms in the ligand structure induced the desired effect of enhancing electrophilic character at the metal center, without promoting substantial changes in the ligand skeleton compared with the parent ligand PhB(CH₂PPh₂)₃^{鈭?/sup> (PhBP₃). Olefin aziridination and C鈥揌 amidation reactions have been induced with those complexes as catalyst precursors. The copper derivative catalyzed the olefin aziridination of an array of olefins bearing either electron-donating or electron-withdrawing groups. The silver analogue was found to promote the C鈥揌 amidation of a series of substrates in moderate to high yields.}