Three-Component Dynamic Covalent Chemistry: From Janus Small Molecules to Functional Polymers
作者:Hongxu Liu、Hung-Hsun Lu、Jiaming Zhuang、S. Thayumanavan
DOI:10.1021/jacs.1c08574
日期:2021.12.15
been developed and applied to multicomponent polymerization and controlled radical polymerization for the construction of random and block copolymers. This chemistry features mild reaction conditions, high yield, simple isolation, and water as the only byproduct. With the advantages of the distinct nucleophilicity of thiol and hydroxyl groups, the chemistry could be used for stepwise labeling and modifications
一种新的多组分反应,涉及 2-羟基苯甲醛、a矿和 2 - mercaptobenzaldehyde(HAM 反应)已被开发并应用于多组分聚合和受控自由基聚合,以构建无规和嵌段共聚物。这种化学反应条件温和,产率高,分离简单,唯一的副产物是水。由于硫醇和羟基具有独特的亲核性,该化学方法可用于伯胺的逐步标记和修饰。由该反应形成的 Janus 化学接头在缓冲液中表现出可降解性,并生成相应的起始试剂,从而释放胺。有趣的是,化学接头在水作为催化剂的情况下表现出热活化可逆性。这种多组分动态共价特性已应用于无规和嵌段共聚物的变态,生成具有不同结构的聚合物。该化学有望广泛应用于合成高分子化学和材料科学。