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Ion‐radical mechanism of the polymerization of 2,6‐dimethylphenol by oxidative coupling catalysed by CuCl~2~‐amine complex by Kresta, Jiři ;Tkáč, Alexander ;Přikryl, Rudolf ;Malik, Ludovít is a Chemistry article available to read on EtoBox.

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## Abstract The preparation of poly[oxy‐(2,6‐dimethyl)‐1,4‐phenylene] (**2**) via polymerization of 2,6‐dimethylphenol (**1**) by oxidative coupling with CuCl~2~‐amine complexes is described. The reaction mechanism was studied by means of ESR, NMR spectroscopy, and conductivity measurements. It was established that the CC coupling products (dipheno‐quinones) are formed by recombination of phenoxyl radicals and that the very high selectivity of the CuCl~2~‐amine complex catalysts in the formation of **2** (CO coupling) is due to the cationic mechanism based on the consecutive reaction of the phenoxyl radicals with Cu(II) complexes. This consecutive reaction of the phenoxyl radicals with Cu(II) complexes is responsible for the non‐measurable level of polymeric radicals **5** by ESR, previously reported.

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Author

Kresta, Jiři ;Tkáč, Alexander ;Přikryl, Rudolf ;Malik, Ludovít

Publisher

Wiley (John Wiley & Sons); Wiley (ISSN 0025-116X)

Published

1975

Language

EN

Field

Chemistry (Physical Sciences)