Calix[2]bipyrrole[2]furan and Calix[2]bipyrrole[2]thiophene: New Pyrrolic Receptors Exhibiting a Preference for Carboxylate Anions

Heterocycles other than pyrrole, specifically bipyrrole, furan, and thiophene, have been used to construct two new, calixpyrrole-like anion receptors; binding studies, carried out by ITC in CH3CN, reveal a selectivity for “Y-shaped” anions, such as benzoate, over spherical ones, such as chloride.

除吡咯（pyrrole）之外的杂环化合物，具体包括联吡咯、呋喃（furan）与噻吩（thiophene），被用于构建两种新型类杯吡咯阴离子受体；通过等温滴定量热法（ITC）在乙腈（CH3CN）中开展的结合亲和性研究表明，相较于球形阴离子（如氯离子（chloride）），该类受体对“Y形”阴离子（如苯甲酸盐（benzoate））展现出更高的结合选择性。