Zum Mechanismus der oxidativen Kupplung von Phenolen
✍ Scribed by Bartmann, Martin ;Kowalczik, Udo
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1988
- Weight
- 246 KB
- Volume
- 189
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
In order to make a decision between the quinone acetal equilibration/quinone acetal rea'rangement and the so far discussed SET mechanism for the oxidative coupling of 2,6-xylenol lo poly(oxy-2,6-dimethyl-l ,Cphenylene) the polymerization was carried out in the presence of 5-(2,6-dimethylphenoxy)-2-methoxy-1,3-xylene (1) (the methylated dimer) or a-methyl-w-pheiioxypoly(oxy-l,4-phenylene) [O-methylated poly(pheny1ene ether)] (2). GC and GPC studim indicated that neither 1 nor 2 are incorporated into the polymer. These observations exclude tf e SET-mechanism according to Scheme 4. *) Syst. Name: 4,4'-Biphenylchinone.
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