トイオアルキネスからゲム・ディボリル・チオエーテルへのリジオセレクティブ・ダイヒドロボレーション
Yong Wang1, Yuxuan Li1, Lei Wang1
1Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon 999077, Hong Kong SAR, China.
Journal of the American Chemical Society
|January 19, 2023
まとめ
この研究は,アルファヘテロ置換剤を用いたジェム・ディボリル化合物の合成のための新しい方法を導入している. 新しいアルファ-デヒドロボレーション反応は,高度に置換された炭素中心を作り,合成の可能性を拡大します.
科学分野:
- 有機化学
- オーガノボロン化学
背景:
- 1,1-ジボリル (gem-diboryl) 化合物は,重要な合成中間物質である.
- 以前の研究は主にアルファヘテロ置換物質が欠けているゲム・ディボリルアルカンに焦点を当てた.
- アルファヘテロ置換剤を伴うゲム・ディボリル化合物は多用途だが,入手は困難である.
研究 の 目的:
- ヘテロアルキンの最初の直接アルファ-二水酸化を開発した.
- ジェム・ディボリル,ヘテロ,テトラ置換炭素センターの効率的な合成を可能にします.
- 多段階合成に対して,実用的で原子経済的な代替手段を提供すること.
主な方法:
- ヘテロアルキンの新しいアルファ-二酸化反応を利用した.
- チオアルキンの触媒として用いられる.
- 反応メカニズムを明らかにするために制御実験とDFT計算を行いました.
主要な成果:
- ゲム・ディボリル,ヘテロ,テトラ代替炭素センターの効率的な構築を達成した.
- シアオルキンの二酸化酸化で優れたアルファ領域選択性を示した.
- 第二段階のエネルギーバリアがより高い2段階の連続水浸しメカニズムを特定しました.
結論:
- アルファヘテロ置換ゲムジボリル化合物を合成するための,単純で,実用的で,温和で,原子経済的な方法を開発した.
- この反応により,以前はアクセスできない高度に混雑したアルファ-スルフェニル・ジェム・ディボリル・カーボン・センターにアクセスできます.
- この発見は,オルガノボロン化学における既存の合成戦略に貴重な補足となる.
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