Cryptands with 1,3,5-Tris(1′,3′-dioxan-2′-yl)-benzene Units: Synthesis and Structural Investigations
作者:Monica Cîrcu、Albert Soran、Niculina Daniela Hădade、Monica Rednic、Anamaria Terec、Ion Grosu
DOI:10.1021/jo401432y
日期:2013.9.6
Various cryptands based on 1,3-dioxane decorated 1,3,5-trisubstituted-benzene building blocks, connected by different chains (exhibiting ester, ether, or triazol groups) to several units with C-3 symmetry, are reported. The structure of the compounds was investigated by single crystal X-ray diffraction, NMR, and MS. The role of the 1,3-dioxane units was targeted to ensure the preorganization of the substrate for the macrocyclization reactions on one side, and for easier NMR assignment of the structure of the cryptands on the other side.