Presented here is the synthesis of three new Schiff-base cryptands, 4–6. Dynamic covalent imine bond formation via the condensation of a dialdehyde (7 or 8) with two different tris-amines allowed for the preparation of 4–6 in 84%, 80% and 83% yield, respectively. These systems were characterized by NMR spectroscopy, mass spectra, and, in the case of 5, single crystal X-ray diffraction analysis. These cages act as selective CO[Formula: see text] gas adsorbing materials in the solid state.
本文介绍了三种新型希夫碱隐色体 4-6 的合成。通过二醛(7 或 8)与两种不同的三胺缩合形成动态共价亚胺键,制备出了 4-6,收率分别为 84%、80% 和 83%。核磁共振光谱、质谱以及单晶 X 射线衍射分析对这些体系进行了表征。这些笼在固态下可作为选择性 CO[式:见正文]气体吸附材料。