Polymerization of aromatic nuclei. XXVI. Poly(p-phenylene): Friedel–crafts alkylation,molecular weight,and propagation mechanism |
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Authors: | Martin B. Jones Peter Kovacic Douglas Lanska |
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Abstract: | Poly(p-phenylene) was alkylated with n-propyl bromide, n-propyl chloride, and isopropyl bromide in the presence of aluminum chloride. Apparently, the reactions involve dialkylation with n-propyl halides and alternating mono- and dialkylation with isopropyl bromide. Alkylation with ethyl or n-butyl bromide was unsuccessful. The dialkylated polymer was sufficiently soluble to allow molecular weight determination. Mechanistic aspects of alkylation and propagation are treated. |
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