Metal-Free, Multicomponent Synthesis of Pyrrole-Based π-Conjugated Polymers from Imines, Acid Chlorides, and Alkynes

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• 作者：Laure V. Kayser ; Moritz Vollmer ; Merve Welnhofer ; Hanna Krikcziokat ; Klaus Meerholz ; Bruce A. Arndtsen
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：August 24, 2016
• 年：2016
• 卷：138
• 期：33
• 页码：10516-10521
• 全文大小：535K
• 年卷期：0
• ISSN：1520-5126

文摘

Multicomponent coupling reactions (MCRs) are becoming increasingly used in the synthesis of macromolecules, as they can allow the rapid generation of libraries of materials as a method to tune properties. MCRs could prove particularly useful in the synthesis of π-conjugated polymers in which structural changes are necessary for fine-tuning of electronic properties. We describe here the first metal-free multicomponent approach to conjugated polymers. This reaction exploits the coupling of imines, acid chlorides, and (catechyl)PPh to generate phospha-münchnone-containing polymers, which can be converted to poly(pyrroles) via cycloaddition. The platform allows for the efficient synthesis of families of high molecular weight polymers in one step from readily available monomers.