Chemistry Letters p. 1173 - 1174 (1999)
Update date:2022-08-03
Topics:
Takahashi, Tamotsu
Tsai, Fu-Yu
Yanzhong, Li
Zirconacyclopentadienes prepared from 4,4′-dibromodiphenyldiynes or 1-(4′-bromophenyl)-1-alkynes reacted with dimethylacetylene dicarboxylate in the presence of CuCl afforded polyphenylene monomers which contain three benzene rings. Hydrolysis, chlorination with NCS, or allylation of the zirconacyclopentadienes gave a variety of polyphenylenedienylene monomers. Polymerization of these monomers using the system NiCl2(PPh3)2 (cat.)/Zn produced the corresponding polymers.
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Doi:10.1039/a903293b
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