N- ((トリル硫ニル) アゼチドインのアニオン環開きポリメリゼーション 線形ポリ ((トリメチルエレニミン) と閉鎖系ブロック共ポリマーを生産する
Louis Reisman1, Elizabeth A Rowe1, Enrique M Jackson2
1Department of Chemistry and Biochemistry , The University of Alabama , Tuscaloosa , Alabama 35487-0336 , United States.
Journal of the American Chemical Society
|November 9, 2018
まとめ
ポリ・ソルフォニラゼチジン) コポリマーと線形ポリ・ソルフォニラゼチニンの制御された合成は,生アニオンリング開きポリメリゼーションによって達成された. この方法は,新しいポリマー構造の分子量と分散を正確に制御できます.
科学分野:
- ポリマー化学
- 有機合成
- 材料科学
背景:
- 制御されたポリメリゼーション技術は,高度なポリマー材料の開発に不可欠です.
- アゼチジンは,リング開きポリメリゼーションのためのユニークなモノマークラスを提供します.
- 以前の方法では,ポリ・スルフォニラゼチジンとリニア・ポリ・トリメチレンミンの合成を正確に制御することができなかった.
研究 の 目的:
- N-p-トリル硫ニル) アゼチジン (pTsAzet) とN-o-トリル硫ニル) アゼチジン (oTsAzet) の生アニオン環開き共ポリメリゼーションを調査する.
- 線形ポリトリメチレンミネ (LPTMI) への制御された経路を開発する.
- sulfonylazetidinesとN-p-toluenesulfonyl-2-methylaziridine (pTsMAz) を使用してブロックコポリマーの合成を探求する.
主な方法:
- pTsAzetとoTsAzetのアニオンリング開封共聚化
- 運動モニタリングと反応率の決定のためのH NMRスペクトル.
- LPTMI を得るためにトシル群を減少させる.
- pTsMAzの配列ポリメリゼーションに続いて,ブロックコポリマーに対するpTsAzet/oTsAzetの共ポリメリゼーションを行う.
主要な成果:
- pTsAzetとoTsAzetの統計的共ポリマーは,制御された分子量と狭い分散で合成されました.
- 180°Cでのモノメアの反応比は,oTsAzetの1. 66とpTsAzetの0. 60と決定された.
- LPTMIの低分散率による最初の制御された合成が達成されました.
- ブロックコポリマーであるp(pTsMAz) -b-p(pTsAzet-co-oTsAzetは,異なるポリメリゼーション温度を利用して成功して合成されました.
結論:
- 生きているアニオン環開き共ポリメリゼーションは,ポリ ((スルフォニラゼチジン)) 合成に対する優れた制御を提供します.
- トシル群の還元分断は,制御された分子量LPTMIを生産するための効果的な方法である.
- サルフォニラゼチジンとN-p-トルーエネスルフォニル-2-メチラジリディンの異なったポリマー化運動は,容易なブロックコポリマー合成を可能にします.
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