首次研究了铜 (ii)、锌 (ii)、镍 (ii) 和 l-缬氨酸钴 (ii) 与 2-羟乙胺(即三乙醇胺、二乙醇胺和三(羟甲基)氨基甲烷)的相互作用时间。使用红外光谱和电子光谱、质谱和元素分析证实了新配位化合物的形成。确定了 l-缬氨酸铜 (ii) 的晶体结构。还提供了一些制备的 l-缬氨酸复合物的热稳定性和抗菌活性数据。
首次研究了铜 (ii)、锌 (ii)、镍 (ii) 和 l-缬氨酸钴 (ii) 与 2-羟乙胺(即三乙醇胺、二乙醇胺和三(羟甲基)氨基甲烷)的相互作用时间。使用红外光谱和电子光谱、质谱和元素分析证实了新配位化合物的形成。确定了 l-缬氨酸铜 (ii) 的晶体结构。还提供了一些制备的 l-缬氨酸复合物的热稳定性和抗菌活性数据。
Anchoring of an amino acid L-valine on cross-linked styrene-divinyl benzene was carried out in presence of a base. Reaction of cupric acetate with the polymeric ligand resulted in chelate formation with Cu(II) ion. The immobilized Cu(II) catalysts were characterized by elemental analyses, IR, UV-Vis, SEM, ESR and thermal analysis. Physico-chemical properties like surface area, apparent bulk density, pore volume, etc. have been determined. The supported Cu(II) complexes behave as versatile catalysts in the oxidation of various substrates such as benzyl alcohol, cyclohexanol and styrene in presence of t-butyl hydroperoxide as oxidant. The effect of reaction conditions on conversion and selectivity to products has been studied in detail. Preliminary kinetic experiments reveal that the Cu(II) complexes attached to polymer matrix can be recycled about four times with no major loss in activity. (C) 2003 Elsevier B.V. All rights reserved.