Polymer Synthesis Based on Self‐Accelerating 1,3‐Dipolar Cycloaddition Click Reactions
Polymer Synthesis Based on Self‐Accelerating 1,3‐Dipolar Cycloaddition Click Reactions
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基于自加速1,3—偶极环加成点击反应的聚合物合成
DOI：
10.1002/cjoc.202100305
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发表时间：
2021
影响因子：
5.4
通讯作者：
Ke Zhang
中科院分区：
文献类型：
--
作者：
Qingquan Tang;Ke Zhang
本文综述了我们最近在基于自加速双应变促进的1，3偶极炔环加成（DSPDAC）点击反应的聚合物合成方法方面的工作。在DSPDAC中，1，3-偶极与对称-二苯并-1，5-环辛-3，7-二炔（DIBOD）的第一个炔的环加成活化了第二个未反应的炔，其与1，3-偶极的反应比DIBOD的原始炔快得多。当使用DIBOD和双偶极化合物作为单体对时，DSPDAC的自加速特性使我们能够开发化学计量不平衡促进的逐步增长聚合方法。在过量的DIBOD单体存在下，可以生成分子量为1000的聚合物。当使用DIBOD闭环具有1，3-偶极端基的线性聚合物时，DSPDAC的自加速特性有助于我们开发独特的双分子闭环方法。它可以有效地制备纯的环状聚合物在过量的DIBOD小连接体的线性聚合物前体的存在下。
This review reports our recent work on developing polymer synthesis methods based on a self‐accelerating double‐strain‐promoted 1,3‐dipole‐alkyne cycloaddition (DSPDAC) click reaction. In DSPDAC, the cycloaddition of 1,3‐dipole with the first alkyne of sym‐dibenzo‐1,5‐cyclooctadiene‐3,7‐diyne (DIBOD) activates the second unreacted alkyne, which reacts with 1,3‐dipole much faster than the original alkyne of DIBOD. When using DIBOD and bis‐dipole compounds as monomer pairs, the self‐accelerating property of DSPDAC allows us to develop a stoichiometric imbalance‐promoted step‐growth polymerization method. It could produce polymers with ultrahigh molecular weight in the presence of excess DIBOD monomers. When using DIBOD to ring‐close linear polymers with 1,3‐dipole end groups, the self‐accelerating property of DSPDAC facilitates us to develop a unique bimolecular ring‐closure method. It could efficiently prepare pure cyclic polymers in the presence of excess DIBOD small linkers to linear polymer precursors.