Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 25, Pages 9700-9703Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja2033525
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Funding
- Japan Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [22350042] Funding Source: KAKEN
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Polymerization of 2-chloro-3-substituted thiophenes proceeded with a stoichiometric amount of magnesium amide, TMPMgCl center dot 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.
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