Domino synthesis of quinoxaline derivatives using SBA-Pr-NH2 as a nanoreactor and their spectrophotometric complexation studies with some metals ions
作者:Tahereh Ahmadi、Ghodsi Mohammadi Ziarani、Shahriyar Bahar、Alireza Badiei
DOI:10.1007/s13738-018-1312-4
日期:2018.5
reused several times without substantial loss of reactivity. Moreover, the complexation reaction between quinoxaline as a model ligand and some metal ions including Cd2+, Co2+, Cu2+, Fe3+, Hg2+, Ni2+, Pb2+, and Zn2+ ions was examined spectrophotometrically in DMF solution at 25 °C. The formation constants of the resulting complexes were calculated from the computer fitting of the molar absorbance measurements
摘要孔径为6 nm的氨基官能化SBA-15(SBA-Pr-NH 2)已被用作基本的纳米催化剂,通过茚三酮1,2的四元反应一键合成喹喔啉衍生物的多米诺骨牌, -芳基二胺,丙二醛衍生物和α-亚甲基羰基化合物,采用微波辐射。固体碱性催化剂在催化中起着重要的作用,并提高了反应的速率和产率,可以通过简单的过滤容易地处理和从反应混合物中除去,并且可以重复使用几次而基本上不损失反应性。此外,喹喔啉作为模型配体与包括Cd 2 +,Co 2 +,Cu 2 +,Fe 3+在内的一些金属离子的络合反应在25°C下在DMF溶液中分光光度法检测Hg 2 +,Ni 2 +,Pb 2+和Zn 2+离子。通过计算机拟合不同摩尔比的摩尔吸光度测量值,计算出所得配合物的形成常数。所获得的数据表明,所得配合物的稳定性常数按以下顺序变化:Pb 2+> Hg 2+> Cd 2+> Ni 2+> Cu 2+> Fe 3+> Zn 2+>