還元性C ((sp2) -N 単離されたPd ((IV) アミドアリル複合物から除去する H2O2を酸化剤として使用する
Elikplim Abada1, Peter Y Zavalij1, Andrei N Vedernikov1
1Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States.
Journal of the American Chemical Society
|January 4, 2017
まとめ
パラジウムで触媒化されたC−N結合反応は,アミドアリルパラダ (II) サイクルからN置換カルバゾールを効率的に生成する. この研究は,合成有機化学を進めるために,パラジウム (IV) の中間物からC ((sp2) -Nの還元性除去を詳細に説明しています.
科学分野:
- 有機金属化学
- 合成有機化学
- カタリシス
背景:
- パラジウム触媒はC-N結合形成に不可欠である.
- アミドアリル複合体はユニークな反応経路を提供します.
- 炭酸塩合成は材料科学と医薬品において重要である.
研究 の 目的:
- パラジウム触媒を用いたN置換カルバゾールの合成を調査する.
- パラジウム (IV) の中間物質によるC−N結合のメカニズムを探求する.
- 孤立したパラジウム (IV) 種からC ((sp2) -Nの還元性除去を詳細に説明します.
主な方法:
- 二酸化ピリジルケトン (dpk) サポートされたアミドアリルパルダ (II) サイクルと過酸化水素の反応.
- パラジウム (IV) の中間物質のX線 difraktionとNMRスペクトロスコーピーを用いた分離と特徴付け.
- C ((sp2) -N 還元性除去の詳細なメカニズム研究
主要な成果:
- C−N カップリングによるN−R 置換カルバゾール (82−98%の収量) の効率的な合成
- R = MeSO2とCF3SO2に対するアミドアリルPd (IV) 複合体の分離と特徴づけ
- 単離されたアミドアリルPdIV) コンプレックスからC(sp2) -Nの還元性除去に関する最初の詳細な研究.
結論:
- Di-2-ピリジルケトン (dpk) サポートされたアミドアルパルダ (II) サイクルは,カルバゾール合成の有効な前駆体である.
- パラジウム (IV) の中間物質は,C-N結合機構において重要な役割を果たします.
- この研究は,パラジウム触媒によるC-N結合形成に関する重要な機械的洞察を提供します.
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