units. The reaction afforded a mixture of macrocyclic homologues from which a two-membered macrocycle was isolated as the main product. Two disastereomers of the macrocycle were separated and characterized by means of NMR spectroscopy and X-ray crystallography. Conformational changes of these diastereomers were investigated using DFT models and variable-temperature NMR.
甘
脲单体在超分子
化学中是一种流行的构建基块,因为它用于合成可以与阳离子,阴离子或中性客体分子相互作用的通用主体分子。在这里,我们介绍设计和合成的新的包含甘
脲和芳族单元的混合大环。该反应提供了大环同系物的混合物,从该混合物中分离出二元大环作为主要产物。分离了两个大环的非对映异构体,并通过NMR光谱学和X射线晶体学进行了表征。使用DFT模型和可变温度NMR研究了这些非对映异构体的构象变化。