Syntheses of two new multidentate poly((3,5-dimethylpyrazol-1-yl)methyl)benzene ligands have been carried out by alkylation process of pyrazoles with poly(bromomethyl) using the t-BuOK/THF. The ¹H-NMR, ¹³C-NMR, and IR spectroscopic data of these ligands have been fully assigned. The crystalline structure of one compound was completely determined by single-crystal X-ray diffraction at 111 K and room temperature together with the isobaric thermal expansion. The catecholase activity studies were investigated using absorption measurements in methanol. The in situ complexes of the multidentate ligands have been found able to oxidize the catechol substrate. The results demonstrated that factors like molar ratio of oxidant-to-substrate, nature of ligand, metal ion, and counter-ion significantly influence the catalytic activities. Complex L1/Cu(CH₃COO)₂, in the 1:2 molar ratio, exhibits the highest activity towards oxidation of catechol to its corresponding quinone with a rate of 4.46 μmol l⁻¹ min⁻¹. DFT calculations were performed in order to predict the most probable geometry of the organometallic complexes formed by these two new ligands and copper (II) ions.

使用 t-BuOK/THF 通过吡唑与聚（溴甲基）的烷基化过程合成了两种新的多齿聚（（3,5-二甲基吡唑-1-基）甲基）苯配体。1 H-NMR ^{, 13}这些配体的 C-NMR 和 IR 光谱数据已完全指定。一种化合物的晶体结构完全由 111 K 和室温下的单晶 X 射线衍射以及等压热膨胀确定。使用甲醇中的吸收测量来研究儿茶酚酶活性研究。已发现多齿配体的原位复合物能够氧化儿茶酚底物。结果表明，氧化剂与底物的摩尔比、配体性质、金属离子和抗衡离子等因素显着影响催化活性。配合物 L1/Cu(CH ₃ COO) ₂，摩尔比为 1:2，表现出最高的将儿茶酚氧化为相应醌的活性，速率为 4.46 μmol l^-1 分钟^-1。进行 DFT 计算是为了预测由这两种新配体和铜 (II) 离子形成的有机金属配合物的最可能几何形状。