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Updated: Jun 30, 2026

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Synthesis of Esters Via a Greener Steglich Esterification in Acetonitrile
Published on: October 30, 2018
イリジウム複合体の触媒によるアリルエステルのアリルアミネーション
1Department of Chemistry, Graduate School of Integrated Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan. rtakeuch@yokohama-cu.ac.jp
Journal of the American Chemical Society
|September 27, 2001
まとめ
イリジウム複合体の触媒は,炭酸塩の効率的なアリルアミナ化を可能にします. エタノールなどの極性溶媒は,高収量に不可欠であり,パラジウム触媒と比較して優れた選択性を提供します.
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
- オーガニック・シンセシス オーガニック・シンセシス
背景:
- アリルアミネーションは,有機合成における重要な変換である.
- 効率的で選択的な触媒方法の開発は極めて重要です.
- 以前の方法では,しばしば地域選択性とステレオ選択性のコントロールが欠如しています.
研究 の 目的:
- イリジウム複合体の触媒によるアリル炭酸塩のアリルアミナ化を調査する.
- 溶媒と反応条件が触媒活性と選択性に及ぼす影響を調査する.
- 高い選択性を持つアリルアミンの新しい合成経路を確立する.
主な方法:
- イリジウム複合体,特に [Ir ((COD) Cl] ((2) と P ((OPh) ((3) を触媒として利用した.
- エタノールなどの極性溶媒を中心に,様々な溶媒の効果を調査した.
- 異なるアリル炭酸基板と様々な一次および二次アミンの反応を調べた.
主要な成果:
- (E) - アリルカルボネートを使用した分岐型アリルアミンでは,高い収量と選択性 (最大99%) が達成されました.
- 選択的モノアリレーションは,プライマリアミンで観察され,ダイアリレーションを防止しました.
- 1,1-変位-2-プロペニルアセテートからアルファ,アルファ変位アリルアミンの独占的形成.
- (Z) - アリル炭酸から (Z) - 線形アリルアミンの高選択性 (最大100%), (E) - アイソマー形成なし.
- パラジウムで触媒化された同様の反応と比較して,優れた選択性を示した.
結論:
- イリウムの触媒は,アリル炭酸塩のアリルアミナ化のための高度に選択的な方法を提供します.
- 極性溶媒は,高い触媒活性と生産性を達成するために不可欠です.
- この方法は,前例のない選択性を持つ多様なアリルアミンを合成するための貴重な代替手段を提供します.
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