COとエチレンを中性電荷のパラジウムで触媒共ポリメリゼーション (((II) ズウィテリオン
1Division of Chemistry and Chemical Engineering, Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, USA.
Journal of the American Chemical Society
|May 9, 2002
まとめ
新しいズビテリオンパラジウム複合体[Ph(2) BP(2) ]PdMe(THFは,従来のカチオン系と一致する,COとエチレン共ポリマー化における驚くべき触媒活性を示している. この発見は,ポリケトン合成のための有機金属触媒を前進させる.
科学分野:
- 有機金属化学 有機金属化学
- ポリマーサイエンスの科学
- カタリシス カタリシス カタリシス
背景:
- ズウィテリオン系複合体は,触媒作用のためのユニークな電子特性を提供します.
- パラジウム複合体は,オレフィンポリメリゼーションとコポリメリゼーションで広く使用されています.
- ビスフノボラートリガンドは,金属の中心部に強固なサポートを提供します.
研究 の 目的:
- 新種のズウィテリオンパラジウム ((II) 複合体を合成し,特徴づけること.
- COとエチレン共ポリメリゼーションにおけるこの複合体の触媒活性を評価する.
- 確立されたカチオンパラジウム触媒との性能を比較するために.
主な方法:
- ビス・フォスフィノ・ボラートリガンドを用いたズウィテリオン化合物Pd(II) 複合体の合成.
- 炭素一酸化物とエチレンの共ポリマー化における触媒試験.
- 生成されたポリケトン物の特徴と分子重量の比較.
- カチオンパラジウム系との比較研究.
主要な成果:
- ズウィテリオンパラジウム (II) 複合体, [Ph ((2) BP ((2)) ]PdMe ((THF) の合成に成功しました.
- ズウィテリオン複合体は,COとエチレン共ポリメリゼーションにおいて有意な活性を示しています.
- 触媒活性とポリケトン分子量は,カチオン系と比較できます.
- ズウィテリオン系の電子が豊富な性質は,触媒性能を阻害しない.
結論:
- ズウィテリオンパラジウム複合体は,CO/エチレン共ポリメリゼーションの効果的な触媒である可能性があります.
- 開発されたビスフノボラートリガンドは,高度に活性なパラジウム触媒をサポートします.
- この研究は,ポリケトン合成のための触媒の範囲を拡大し,カチオン系システムに対する潜在的により安定した代替案を提供します.
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