One-Pot, Single-Step, and Gram-Scale Synthesis of Mononuclear [(畏6-arene)Ni(N-heterocyclic carbene)] Complexes: Useful Precursors of the Ni0鈥揘HC Unit

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• 作者：Yoichi Hoshimoto ; Yukari Hayashi ; Haruka Suzuki ; Masato Ohashi ; Sensuke Ogoshi
• 刊名：Organometallics
• 出版年：2014
• 出版时间：March 10, 2014
• 年：2014
• 卷：33
• 期：5
• 页码：1276-1282
• 全文大小：389K
• 年卷期：v.33,no.5(March 10, 2014)
• ISSN：1520-6041

文摘

Recently, the combination of Ni(0) and N-heterocyclic carbenes (NHCs) has been paid special attention because of its high reactivity toward bond-forming reactions and the activation of unreactive bonds. Thus, it would be very worthwhile to provide a highly reactive, easily accessible, and versatile Ni⁰鈥揘HC precursor. Herein we report a one-pot, single-step, and gram-scale method for the synthesis of [(畏⁶-arene)Ni(NHC)] complexes from commercially available Ni(cod)₂ and NHC (or its salt) via hydrogenation of COD. The structure and bonding situations of [(畏⁶-arene)Ni(NHC)]s were evaluated by NMR, X-ray, and DFT studies. An application to the synthesis of Ni⁰鈥揘HC complexes via ligand exchange reactions is also demonstrated.