コバルト触媒による非対称移動ノザキ・ヒヤマ・キシ結合

Jian Chen¹, Lifu Wu¹, Zhiyong Song¹

¹State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.

Journal of the American Chemical Society

|September 16, 2024

まとめ

この研究は,新しいコバルト触媒による非対称的な移動性ノザキ-ヒヤマ-キシ結合を導入しています. この方法は,C-H結合機能化を使用して単純な前体から複雑な分子を効率的に合成します.

科学分野:

有機化学
カタリシス
持続可能な合成

背景:

選択的なC−H結合機能化は,効率的な合成の鍵である.
複雑な分子への持続可能なアプローチを提案しています.
非対称な触媒は,エナチオメリックに純粋な化合物を生成するために不可欠です.

研究の目的:

ノザキ・ヒヤマ・キシ (NHK) の新型共催性非対称移動結合を開発する.
独特のコバルト/ヒドリドシフトを通じて,選択的なC-H結合の機能化を実現する.
NHK カップリング反応における地域,E/Z,およびエナチオ選択性を制御する.

主な方法:

コバルト触媒による非対称な還元性NHK結合
アリル (偽) ハリドとアルデヒドを電化物として利用する.
アリル対アリル結合のためのリガンドリレーの触媒戦略を使用する.

主要な成果:

アリルからアルケニル 1,4-コバルト/ヒドリドへの空間のシフトが達成されました.
リガンド選択により,地域性,E/ Z性,およびエナチオ選択性に対する優れた制御が示された.
この方法は,アリル対アリル非対称移動NHK結合に拡張された.

結論:

この作品は,価値あるNHKアダクトを合成するための汎用的なプラットフォームを提供します.
開発された方法論は,キラルアリルおよびベンジルアルコールへのアクセスを可能にします.
これらの製品は,さらなる化学的変換のための多用途のシントンとして機能します.

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