Solid-Supported Single-Component Pd(II) Catalysts for Polar Monomer Insertion Copolymerization
Solid-Supported Single-Component Pd(II) Catalysts for Polar Monomer Insertion Copolymerization
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DOI：
10.1021/cs5005954
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发表时间：
2014-07
期刊：
影响因子：
12.9
通讯作者：
Philipp Wucher;J. B. Schwaderer;S. Mecking
中科院分区：
文献类型：
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作者：
Philipp Wucher;J. B. Schwaderer;S. Mecking
通过两种不同的方法制备了用于极性单体插入聚合的中性膦磺酸基 Pd(II) 配合物的多相代表。 [{κ2-(P,O)-(2-茴香基)2PC6H4SO2O}Pd(Me)L]（L =pyr、dmso 或 Cl）络合物物理吸附在无机基质（即粘土或二氧化硅）上。此外，还制备了在非螯合P-芳基部分带有羟基连接基团的新型膦磺酸根络合物。这些复合物共价连接至交联聚苯乙烯。所有固定化钯配合物在乙烯聚合和乙烯/MA共聚中均具有活性，无需任何额外的助催化剂。此外，还证明了聚苯乙烯结合复合物能够从形成的聚合物溶液中分离出来并重新用于另一次聚合反应。
Heterogenized representatives of neutral phosphine sulfonato Pd(II) complexes for polar monomer insertion polymerization were prepared by two different approaches. [{κ2-(P,O)-(2-anisyl)2PC6H4SO2O}Pd(Me)L] (L = pyr, dmso, or Cl) complexes were physisorbed on inorganic substrates, namely, clay or silica. In addition, new phosphine sulfonato complexes bearing hydroxyl linker groups at the nonchelating P-aryl moiety were prepared. These complexes were covalently tethered to cross-linked polystyrene. All immobilized palladium complexes are active in ethylene polymerization and ethylene/MA copolymerization without any additional cocatalyst. In addition, separation from the polymer solution formed and reutilization for another polymerization were demonstrated for polystyrene-bound complexes.