脱羧
化学
丙烯酸酯
光催化
聚合物
聚合
共聚物
有机化学
激进的
光化学
高分子化学
催化作用
作者
Alafate Adili,Angie B. Korpusik,Daniel Seidel,Brent S. Sumerlin
标识
DOI:10.1002/anie.202209085
摘要
Visible light-mediated direct decarboxylation of carboxylic acids with an acridine photocatalyst is a convenient and powerful method to generate carbon-centered radicals in polymer chains. Advantageously, this process proceeds under mild conditions, without preactivation of the acid groups. We utilize decarboxylation in the presence of a hydrogen atom donor to form statistical acrylate-ethylene and acrylate-propylene copolymers, which are challenging to obtain by direct polymerization. We additionally show that decarboxylation of methacrylic acid units within polymethacrylates can trigger degradation of the polymer backbones. Moreover, a dual catalytic approach, which combines the function of an acridine photocatalyst with that of a cobaloxime catalyst, is leveraged to furnish unique copolymers with pendent alkenes. Our work indicates that direct decarboxylation is a versatile technique for the synthesis of functional materials with tailored compositions and properties.
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