ディメチルスルフォキシオニウムメチリドのボロン触媒によるポリメリゼーション. 生きているポリメチレン合成です
Brett B Busch1, Manuel M Paz, Kenneth J Shea
1Department of Chemistry, University of California Irvine, Irvine, California 92697-2025, USA.
Journal of the American Chemical Society
|April 4, 2002
まとめ
オルガノボランは,ジメチルスルフォクソニウムメチリドのポリメリゼーションを触媒化し,ポリメチレンを生成します. この方法は,制御されたポリマー分子重量と高回転周波数を可能にし,スターオルガノボランの合成を可能にします.
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
背景:
- オーガノボランは,有機合成における汎用的な触媒である.
- ディメチルスルフォキシオニウムメチリドは,ポリメリゼーションの可能性のある反応性イライドです.
研究 の 目的:
- オーガノボランを用いたダイメチルスルフォキシオニウムメチリドの触媒的ポリメリゼーションを調査する.
- その結果生成されるポリメチレン製品と反応機構を特徴付ける.
主な方法:
- ディメチルスルフォキシオニウムメチリドのトリアルキルおよびアリルオルガノボランによる触媒的ポリメリゼーション.
- ポリマーの分子量,多分散性,構造の分析.
- 反応メカニズムを解明するための運動学的研究.
主要な成果:
- 制御されたポリマーの分子重量は,イライド/ボランの比率に比例する.
- 合成した星のオルガンボランは,分子重量150万まで.
- 高い周回頻度 (>6 x 10^6 g/mol/h) と,ズウィテリオン複合体と1,2-アルキル群の移動を含む反応機構を決定した.
結論:
- オルガノボラン触媒によるポリホモロゲーションは,ポリメチレン合成への制御された経路を提供します.
- この方法は効率的で,ポリ分散度が低いポリマーを生成し,複雑なポリマー構造の作成を可能にします.
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