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Gold-Catalyzed Precise Bromination of Polystyrene
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2023-05-01 , DOI: 10.1021/jacs.3c03069
Bowen Dou 1 , Yan Xu 1 , Jianbo Wang 1, 2
Affiliation  

Modification of commodity aromatic polymers is highly desirable for accessing materials with new properties. The long-standing challenge for such approaches lies in the development of catalytic methods that can functionalize the aromatic polymers with high precision while preserving the molecular weight and distribution of the starting polymers without any alteration. Herein, we report a highly efficient AuCl3-catalyzed site-selective aromatic C–H halogenation of polystyrene. The most important feature of this method is that the degree of halogenation can be precisely controlled by simply changing the loading of the halogenating agent, thus allowing the tuning of functional group density in an accurate and predictable manner. Various functional groups, including NH2 and Bpin, can be installed through effective derivatization of the resultant brominated polystyrene, thus making the method a valuable strategy for the synthesis of value-added materials with tailored properties.

中文翻译:

金催化聚苯乙烯的精确溴化

为了获得具有新特性的材料,非常需要对商品芳族聚合物进行改性。此类方法的长期挑战在于开发催化方法,该方法可以高精度地功能化芳香族聚合物,同时保持起始聚合物的分子量和分布而不作任何改变。在此,我们报道了一种高效的 AuCl 3催化的聚苯乙烯位点选择性芳族 C-H 卤化反应。该方法最重要的特点是可以通过简单地改变卤化剂的负载量来精确控制卤化程度,从而以准确和可预测的方式调整官能团密度。各种官能团,包括 NH 2和 Bpin,可以通过所得溴化聚苯乙烯的有效衍生化来安装,从而使该方法成为合成具有定制特性的增值材料的有价值的策略。
更新日期:2023-05-01
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