A Convenient Preparative Method of Dibromoterphenyl and Bis(bromophenyl)diene Monomers Using Zirconacyclopentadienes
作者:Tamotsu Takahashi、Fu-Yu Tsai、Yanzhong Li
DOI:10.1246/cl.1999.1173
日期:1999.11
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
由 4,4'-二溴二苯基二炔或 1-(4'-溴苯基)-1-炔烃在 CuCl 存在下与二甲乙炔二甲酸反应制备的氧化锆环戊二烯得到含有三个苯环的聚苯单体。水解、用 NCS 氯化或氧化锆环戊二烯的烯丙基化得到多种聚亚苯基单体。使用 NiCl2(PPh3)2 (cat.)/Zn 系统聚合这些单体产生相应的聚合物。