Nickel(II)-Catalyzed Cross-Coupling Polycondensation of Thiophenes via C–S Bond Cleavage

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• 作者：Shunsuke Tamba ; Kanta Fuji ; Karin Nakamura ; Atsunori Mori
• 刊名：Organometallics
• 出版年：2014
• 出版时间：January 13, 2014
• 年：2014
• 卷：33
• 期：1
• 页码：12-15
• 全文大小：237K
• ISSN：1520-6041

文摘

Cross-coupling polycondensation of thiophene derivatives occurs via C鈥揝 bond cleavage in the presence of a nickel catalyst. Head to tail type (HT) regioregular poly(3-hexylthiophene) is obtained by a nickel(II)-catalyzed deprotonative C鈥揌 functionalization polycondensation of 2-(phenylsulfonyl)-3-hexylthiophene with stoichiometric TMPMgCl路LiCl or with the catalytic secondary amine/RMgX. Debrominative Grignard metathesis (GRIM) polymerization with 5-bromo-2-(phenylsulfonyl)-3-hexylthiophene also proceeds by the catalysis of the nickel(II) complex to afford the corresponding polythiophene.