純四電子還元結合による脱酸素C−C結合形成プロセス
David P Todd1, Benjamin B Thompson1, Alex J Nett1
1Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States.
Journal of the American Chemical Society
|October 6, 2015
まとめ
この研究は,エノンまたはエナルおよびアルキンからスキップされたダイエンを効率的に合成する新しいニッケル触媒結合反応を導入します. この方法は,脱酸素化による4電子の還元結合を用いて,痕跡のないアルケンの設置戦略を提供します.
科学分野:
- 有機化学
- カタリシス
- 合成方法論
背景:
- エノンとエナルは有機合成における多用途の基質である.
- カルボニル化合物のアルキンと直接結合することは依然として課題です.
- skipped diene合成のための効率的な方法の開発は重要な関心事である.
研究 の 目的:
- 新しいニッケル触媒結合反応を 開発するために
- ダイエネ製品に直接アクセスできるようにする
- アルケンの設置を 追跡できないようにする
主な方法:
- ニッケル触媒によるエノン/エナルとアルキンの結合.
- シランとアルコ酸化チタンの減少剤の使用
- 新しいニッケル ((0) の前触媒の開発は,N-ヘテロサイクリックカルベンのリガンド.
主要な成果:
- スキップされたダイネ産物の直接合成が達成された.
- この反応には4電子の減量結合が含まれる.
- 開始エノンの脱酸素化が起こります.
- ニッケル ((0) の新種の前触媒は効率化に不可欠である.
結論:
- 開発された方法は,スキップされた日々に効率的なアクセスを提供します.
- この戦略はα,β-不飽和カルボニルの反応性を利用する.
- 酸素の同時流出により,痕跡のないアルケンの設置が可能になる.
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