Polymerization of Phenylacetylene Catalyzed by Diphosphinopalladium(II) Complexes
Polymerization of Phenylacetylene Catalyzed by Diphosphinopalladium(II) Complexes
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二膦钯(II)配合物催化苯乙炔聚合
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
S. Pollack
中科院分区：
文献类型：
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作者：
Kelin Li;Guangping Wei;J. Darkwa;S. Pollack
(dppf)PdCl(CH3)、(dippf)PdCl(CH3)、(dppe)PdCl(CH3)、(dppf)PdCl2、(dippf)PdCl2 和 (dppe)PdCl2 反应原位生成阳离子双(膦基)钯配合物 (dppf = 双(二苯基膦)二茂铁，dippf =双（二异丙基膦）二茂铁，dppe = 双（二苯基膦）乙烷）与 AgOTf。 dppf- 和 dippf- 钯配合物催化苯乙炔 (PA) 的聚合，而 dppe 类似物则形成苯乙炔低聚物。研究了溶剂和温度对聚合的影响，结果表明苯乙炔 (PPA) 形成的最佳测试多分散性是 1:1 CH2Cl2−CH3CN 溶剂混合物和室温。
Cationic bis(phosphino)palladium complexes were generated in situ from the reaction of (dppf)PdCl(CH3), (dippf)PdCl(CH3), (dppe)PdCl(CH3), (dppf)PdCl2, (dippf)PdCl2, and (dppe)PdCl2 (dppf = bis(diphenylphosphino)ferrocene, dippf = bis(diisopropylphosphino)ferrocene, and dppe = bis(diphenylphosphino)ethane) with AgOTf. The dppf− and dippf−paladium complexes catalyzed the polymerization of phenylacetylene (PA) whereas the dppe analogues formed phenylacetylene oligomers. Solvent and temperature effects on polymerization were investigated and showed that best test polydispersity for phenylacetylene (PPA) formation was a 1:1 CH2Cl2−CH3CN solvent mixture and room temperature.