A convenient preparative method of dibromoterphenyl and Bis(bromophenyl)diene monomers using zirconacyclopentadienes

DOI: 10.1246/cl.1999.1173

Source and publish data:

Chemistry Letters p. 1173 - 1174 (1999)

Update date:2022-08-03

Topics:

Authors:

Takahashi, Tamotsu

Tsai, Fu-Yu

Yanzhong, Li

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Article abstract of DOI:10.1246/cl.1999.1173

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.

Full text of DOI:10.1246/cl.1999.1173

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