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- W2093171467 abstract "Abstract Comparative studies have been carried out of the effectiveness of two organometallic coupling reagents for the synthesis of poly(alkynylarene)s via palladium catalyzed cross‐coupling reactions of dialkynes with organic dibromides. In comparison to copper reagents, monomeric difunctional trialkyltin acetylides show increased thermal stability which allows reactions to be performed at higher temperatures; they give oligomeric and polymeric materials of improved molecular weight. By contrast, the inferior solubility of copper acetylides limits chain growth, and above 140°C the Pd/Cul system is prone to homopolymerization of the dialkyne. The coupling reactions are solvent‐dependent but not strongly influenced by the nature of the palladium precursor complex or the phosphine ligand. © 1992 John Wiley & Sons, Inc." @default.
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- W2093171467 date "1992-11-01" @default.
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- W2093171467 title "Synthesis of poly(arylene ethyne)s via palladium‐catalyzed cross‐coupling reactions with Cu and Sn reagents" @default.
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- W2093171467 doi "https://doi.org/10.1002/pola.1992.080301204" @default.
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