Novel complexes based on 2,4,8-triarylnaphthylamine [[(2,4-{3,5-(CF3)2C6H3}2-8-(3,5-R2C6H3)-C10H4)-N═C(H)-{3-(9-anthryl)-2-O-C6H3}-κ2-N,O]Ni(CH3)(pyridine)] (4-Py, R = Me; 5-Py, R = CF3) were synthesized from 8-arylnaphthylamines which can be generated via selective lithiation, borylation, and coupling in a one-pot procedure. Due to their living characteristics in ethylene polymerization and the particularly low propensity of 5-Py for β-H elimination as reflected by a high linearity even at elevated polymerization temperatures of 60 °C, ultrahigh molecular weight polyethylene (UHMWPE) is formed in polar organic solvents (THF, diethyl ether) as a reaction medium in a controlled polymerization ( Mw/ Mn = 1.2 at Mn = 1.1 × 106 g mol-1).

中文翻译：

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在极性溶剂中可控聚合制备超高分子量聚乙烯

基于 2,4,8-三芳基萘胺的新型配合物 [[(2,4-{3,5-(CF3)2C6H3}2-8-(3,5-R2C6H3)-C10H4)-N=C(H)- {3-(9-蒽基)-2-O-C6H3}-κ2-N,O]Ni(CH3)(吡啶)] (4-Py, R = Me; 5-Py, R = CF3) 合成自8-芳基萘胺，可通过选择性锂化、硼酸化和一锅法偶联生成。由于它们在乙烯聚合中的活性特性以及 5-Py 消除 β-H 的特别低的倾向，即使在 60 °C 的升高聚合温度下也表现出高线性，因此超高分子量聚乙烯 (UHMWPE) 在极性有机物中形成溶剂（THF、乙醚）作为受控聚合中的反应介质（Mw/Mn = 1.2，Mn = 1.1 × 106 g mol-1）。