有機金属ニッケル (((III)) 複合体は,クロスカップリングと炭素・ヘテロアトム結合形成反応に関連しています
Bo Zheng1, Fengzhi Tang, Jia Luo
1Department of Chemistry, Washington University , One Brookings Drive, St. Louis, Missouri 63130-4899, United States.
Journal of the American Chemical Society
|April 10, 2014
まとめ
この研究は,ニッケル (III) 複合体の分離と特徴を報告し,クロスカップリングを含む,重要なC-CとC-ヘテロアトム結合形成反応におけるそれらの触媒活性を示しています. これらの発見は,触媒におけるニッケル (III) の重要な役割を強調しています.
科学分野:
- 有機金属化学 有機金属化学
- カタリシス カタリシス カタリシス
- ニッケル化学 ニッケル化学
背景:
- ニッケル複合体は,C-CとC-ヘテロ原子結合形成の重要な触媒である.
- Ni(0) とNi(II) が一般的であるが,Ni(I) とNi(III) の中間物質は,いくつかの反応で提案されている.
研究 の 目的:
- ニッケル (III) 複合体の反応性を分離,特徴づけ,調査する.
- ニッケル (III) が触媒的クロスカップリングとC-ヘテロ原子結合形成に関与する証拠を提供すること.
主な方法:
- Ni (III) 複合体の分離と構造的特徴.
- Ni (III) 種のスペクトロスコープ分析.
- 伝達と還元性除去を含む有機金属反応性の評価.
- KumadaとNegishiのクロスカップリング反応における触媒活性をテストする.
主要な成果:
- アリルおよびアルキルリガンドによるNi (III) 複合体を成功裏に分離し,特徴づけました.
- これらのNi (III) 種が伝染と還元性除去に携わっていることが実証されました.
- 確認されたNi (III) 複合体は,KumadaとNegishiのクロスカップリング反応の有能な触媒である.
- 観察されたNi (III) 種は,C-CとC-ヘテロ原子結合の形成を促進する.
結論:
- 有機金属Ni (III) 種は,クロスカップリング反応に直接関与しています.
- Ni (III) 中間物質は,酸化誘導によるC-ヘテロ原子結合形成において重要な役割を果たします.
- この研究は,有機合成におけるNi (III) の触媒的有用性に対する強力な証拠を提供します.
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