共轭体系
聚合
化学
催化作用
高分子化学
聚合物
甲苯
钯
偶联反应
组合化学
接受者
有机化学
凝聚态物理
物理
作者
Masayuki Wakioka,Fumiyuki Ozawa
标识
DOI:10.1002/ajoc.201800227
摘要
Abstract Recently, the palladium‐catalyzed direct arylation polymerization (DArP) has emerged as a viable alternative to conventional synthetic means of making π‐conjugated polymers based on catalytic cross‐coupling reactions. The DArP, which proceeds through C−H bond activation, has a distinct advantage over cross‐coupling polymerization in terms of fewer reaction steps and higher functional group tolerance. We have developed novel catalysts for DArP by using P(2‐MeOC 6 H 4 ) 3 ( L1 ) and P(2‐Me 2 NC 6 H 4 ) 3 ( L2 ) as ligands. Although common direct arylation catalysts require the use of strongly coordinating solvents such as DMA and DMF, our catalysts exhibit high activity in THF and toluene, which are good solvents for π‐conjugated polymers. Thus, we could realize the precise synthesis of highly head‐to‐tail regioregular poly(3‐hexylthiophene) (HT‐P3HT) and donor–acceptor type alternating copolymers (DA polymers) with well‐controlled structures through DArP.
科研通智能强力驱动
Strongly Powered by AbleSci AI