Homochiral Metallacycle Used as a Stationary Phase for Capillary Gas Chromatographic Separation of Chiral and Achiral Compounds
作者:Bin Huang、Kuan Li、Qi-Yu Ma、Tuan-Xiu Xiang、Rui-Xue Liang、Ya-Nan Gong、Bang-Jin Wang、Jun-Hui Zhang、Sheng-Ming Xie、Li-Ming Yuan
DOI:10.1021/acs.analchem.3c02438
日期:2023.9.5
many fields. However, to the best of our knowledge, no research on the use of metallacycles as stationary phases for gas chromatographic (GC) separations has been published yet. In this work, we report for the first time the use of a homochiral metallacycle, [ZnCl2L]2, as a stationary phase for GC separations. [ZnCl2L]2 was synthesized by reaction of (S)-(1-isonicotinoylpyrrolidin-2-yl)methyl-isonicotinate
金属环是一类新型超分子材料,具有圆形结构、内腔和丰富的主客体化学性质,在许多领域表现出良好的应用前景。然而,据我们所知,尚未发表关于使用金属环作为气相色谱(GC)分离固定相的研究。在这项工作中,我们首次报道了使用纯手性金属环[ZnCl 2 L] 2作为气相色谱分离的固定相。[ZnCl 2 L] 2通过( S )-(1-异烟酰吡咯烷-2-基)甲基异烟酸酯(L)与ZnCl 2 的配位驱动自组装反应合成。[ZnCl 2 L] 2涂层柱不仅对有机异构体而且对外消旋化合物都显示出优异的分离性能。16种外消旋体(包括醇、酯、氨基酸衍生物、醚、有机酸和环氧化物)和21种异构体化合物(包括位置异构体、结构异构体和顺/反异构体)在[ZnCl 2 L] 2涂层上得到很好的分离柱子。令人印象深刻的是,一些外消旋体以高分辨率 ( Rs ) 得到分离,包括 1,2-丁二醇二乙酸酯 ( Rs = 25.86)、3-羟基丁酸乙酯