In the reactions of bis(α-amino acidato)copper(II) with formaldehyde and benzamide, competing processes occur and the preferred pathway depends on the nature and number of the α-carbon substituents of the chelated amino acid, and the pH of the reaction medium. Aldol-type condensation yields complexes with oxazolidine ring(s) while Mannich aminomethylation results in the formation of complexes with N-methylbenzamido pendant arm(s). The crystal structure determination of bis(3-methylbenzamido-5-methyloxazolidine-4-carboxylato)copper(II) dihydrate establishes its formation from a combination of both processes, in which aldol condensation occurs first. The chemistry of these reactions is rationalized with a proposed reaction scheme. The synthesized compounds are characterized by infrared spectroscopy and microanalysis.
在双(
α-氨基酸)
铜(II)与
甲醛和苯甲酰胺的反应中,会发生竞争过程,首选途径取决于螯合
氨基酸的α-碳取代基的性质和数量以及pH值反应介质的。羟醛型缩合产生与
恶唑烷环的复合物,而曼尼希
氨甲基化导致与N-甲基苯甲酰
氨基侧臂形成复合物。双(3-甲基苯甲酰胺基-5-甲基
恶唑烷-4-羧基)
铜(II)
二水合物的晶体结构测定确定其形成过程是两个过程相结合的过程,其中羟醛缩合首先发生。这些反应的
化学反应通过所提出的反应方案进行了合理化。通过红外光谱和微量分析对合成的化合物进行了表征。