Ary-Branched, Ether Connectivity

The procedure utilized phenoxide monomers possessing two carbonyl, sulfonyl or tetrafluorophenyl activated aryl fluoride moieties that are displaced during building block connectivity. Reaction conditions included short duration (0.5-2 h) and moderate temperature (100-180 °C). 

Polymerizations involving monomers 15 a,b were insensitive to the reaction temperature, whereas self-reaction of monomers 15 c,d at 140 °C afforded insoluble gels, presumably due to acetylene cross-linking however at 100 °C, fully soluble polymers were realized. A related procedure (bromide displacement via phenoxide ion) using 2,4-dibro-mophenol or 2,4,6-tribromophenol as the starting material has also been reported.15  

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