Polymer synthesis through chain-growth polymerization is an important methodology for production of functional materials. While the structure of the side chain is essential to design their properties and functions, possible molecular designs are limited due to the dependency of polymerization ability on the side chain of monomers. If we find out the synthesis of vinyl polymers bearing “replaceable” side chains in post polymerization reaction, it will become possible to synthesize a new class of polymers, which has been difficult to access in conventional method. In the field of organic synthesis, boronyl groups have gained much attention due to their applicability for various molecular transformation. In this paper, we report the chain-growth polymerization of alkenyl boronates leading to the synthesis of vinyl polymers bearing boronyl groups as replaceable side chains. After the optimization of molecular structure and the polymerization condition, we achieved the synthesis of vinyl polymer containing boronyl groups which are directly attached on the main chain. Its number-averaged molecular weight was more than ten thousand, indicating that this class of monomers have high polymerization ability under appropriate reaction condition. The molecular transformation of obtained polymer and density functional theory-based investigation will be also discussed.

Chain-growth polymerization of alkenyl boronates: Synthesis of conventionally inaccessible polymers based on replaceable side chain

2019 Fall National Meeting

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