Iridium-Catalyzed Direct C−H Amidation Polymerization: Step-Growth Polymerization by C−N Bond Formation via C−H Activation to Give Fluorescent Polysulfonamides
作者:Yoon-Jung Jang、Soon-Hyeok Hwang、Tae-Lim Choi
DOI:10.1002/anie.201707446
日期:2017.11.13
activation of C−H bonds to produce polysulfonamides by an atom‐economical and green method using iridium‐catalyzed direct C−H amidation polymerization (DCAP). After screening various directing groups, additives, silver salts, concentrations, and temperatures to optimize DCAP, high‐molecular‐weight (up to 149 kDa) and defect‐free polysulfonamides were synthesized from various bis‐sulfonyl azides. Although
我们报告了一种通过铱原子催化的直接CHH酰胺化聚合(DCAP)的原子经济和绿色方法活化CH键以产生聚磺酰胺的有效策略。在筛选了各种导向基团,添加剂,银盐,浓度和温度以优化DCAP之后,由各种双磺酰叠氮化物合成了高分子量(最高149 kDa)和无缺陷的聚磺酰胺。尽管这些聚合物没有常规的荧光共轭核,但由于激发态的分子内质子转移过程,它们在光激发时会发出斯托克斯位移大且量子产率高的蓝光。