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Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees
Published on: November 29, 2016
アンサ-ジルコノセネスのエナチオセレクティブ合成
Matthew D LoCoco1, Richard F Jordan
1Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, USA.
Journal of the American Chemical Society
|October 28, 2004
まとめ
チラルジルコノコセンの複合体は,新しいアンサ-ビス-インデニル反応剤を使用して,高収量とエナティオメール純度で合成されました. これらの化合物は,非対称な触媒にとって価値があり,立体選択合成における潜在的な応用がある.
科学分野:
- 有機金属化学 有機金属化学
- アシンメトリック・カタリシス
- ジルコニア化学 ジルコニア化学
背景:
- キラルリンガンドは,エナチオセレクティブ合成に不可欠である.
- ジルコノコーセンの複合体は,ポリメリゼーションと有機合成で広く使用される触媒である.
- エナティオメリカルに純粋なジルコノセノンのための効率的な経路の開発は,大きな関心を持っています.
研究 の 目的:
- 新規のキラルアンサ-ジルコノセーン複合体を合成する.
- 新しいリチウムアンサビスインデニル反応剤の有用性を調査する.
- これらの複合体の合成において,高収量とエナティオメール過剰を達成するために.
主な方法:
- リチウムアンサ-ビス-インデニル反応剤とキラルケラ化ビス-アミドジルコニウム複合体の反応.
- 結果となるアンサ-ジルコノセンの製品の分離と浄化.
- アンサ-ジルコノセンの二塩化誘導体への変換とキラルダイアミンリガンドの回復.
主要な成果:
- 2つの新しいアンサ-ジルコノセン (S,S,R,R) -9aと (S,S,R,R) -9bの合成は,<95%の単離収量と>99%のエナティオメール過剰で達成されました.
- エナチオメリックに純粋な二塩化物 (S,S) -10bは91%の収穫率で得られた.
- キラルダイアミンリガンドは,反応後の回復に成功しました.
結論:
- 開発された方法は,エナティオメリックに純粋なアンサ-ジルコノセネスへの効率的なアクセスを提供します.
- 新しいリチウムアンサビスインデニル反応剤は,キラルジルコニウム複合体の効果的な結合パートナーです.
- これらのキラルジルコノセンは,非対称な触媒の応用のための有望な候補である.
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