タンデム・カタリシスの相容れない触媒変換の分割
Jie Lu1, Jonas Dimroth1, Marcus Weck1
1Molecular Design Institute and Department of Chemistry, New York University , New York, New York 10003, United States.
Journal of the American Chemical Society
|October 2, 2015
まとめ
この研究は,コンパートメンタライゼーションを使用して1つの鍋で2つの互換性のない触媒反応を実行するための新しい方法を示しています. このアプローチは,合成効率を高め,移行金属触媒とのタンデム反応を可能にします.
科学分野:
- カタリシス
- 材料科学
- 有機合成
背景:
- 合成化学では,同時に相容れない触媒変換が難しい.
- 自然界の区分化戦略は 新しい合成方法論を刺激します
- タンドム反応は,干渉を避けるために注意深い触媒管理を必要とします.
研究 の 目的:
- 互換性のない移行金属触媒を含むタンデム反応のためのワンポット方法を開発する.
- 水性環境における触媒のサイト隔離のための区画化を利用する.
- 単一の反応容器内で連続した触媒変換を可能にします.
主な方法:
- ポリ ((2-オクサゾリン) のアンフィフィリックトライブロック共ポリマーの設計と合成.
- 触媒包装とサイト分離のためのコアシェルミセルの形成.
- ミセルの共性結合と金属触媒の結合 (コバルトとロジウム).
- 連続した触媒反応:水害性核におけるアルキン水化と,水性殻における非対称的移転水化.
主要な成果:
- ミセラ・サポーター内の 2 つの互換性のないトランジション・メタル・カタリストの成功区分.
- 同催化アルキンの水分化は,水害性ミセルの核で発生した.
- 中間ケトンからキラルアルコールへのロジウム触媒による非対称的転移水素化は,水性ミセルの殻で発生した.
- 触媒部位隔離によって可能になった1ポットタンデム反応のシーケンスの実証.
結論:
- コア・シェルのミセラーシステムは,互換性のない触媒を効果的に分割し,一つの鍋でタンデム反応を可能にします.
- このアプローチは合成化学における触媒互換性の限界を克服する.
- この方法は,連続した触媒的ステップを用いた複雑な分子合成のための多用途のプラットフォームを提供します.
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