Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan.
J Am Chem Soc. 2011 Jun 29;133(25):9700-3. doi: 10.1021/ja2033525. Epub 2011 Jun 7.
Polymerization of 2-chloro-3-substituted thiophenes proceeded with a stoichiometric amount of magnesium amide, TMPMgCl·LiCl, or a combination of a Grignard reagent and a catalytic amount of secondary amine in the presence of a nickel catalyst. Although the nickel-catalyzed polymerization with NiCl(2)dppe, which exhibited high catalytic activity in the reaction of bromothiophenes, was less effective, use of a nickel catalyst bearing N-heterocyclic carbene as a ligand was found to induce polymerization with controlled molecular weight and molecular weight distribution.
2-氯-3-取代噻吩的聚合反应需要化学计量的镁酰胺、TMPMgCl·LiCl 或格氏试剂和催化量的仲胺的组合，在镍催化剂的存在下进行。尽管 NiCl(2)dppe 催化的聚合反应具有很高的催化活性，但在溴代噻吩的反应中效果较差，使用带有 N-杂环卡宾作为配体的镍催化剂可以诱导具有可控分子量和分子量分布的聚合反应。
