Preorganized structures suitable for anion binding were prepared by introducing dipyrrolyldiketone BF₂ complexes as acyclic anion-responsive π-electronic molecules into macrocycles. Pyrrole-inverted conformations, which typically present low stability in the case of acyclic derivatives, were obtained by covalent linkages through ring-closing olefin metathesis, exhibiting extremely high affinity for different anions.

中文翻译：

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克服构型变化引起的能量损失的环状阴离子响应π电子分子

通过将二吡咯基二酮BF ₂络合物作为无环阴离子反应性π电子分子引入大环中，制备适合阴离子结合的预组织结构。吡咯转化的构象通常在无环衍生物的情况下表现出低稳定性，是通过闭环烯烃复分解通过共价键获得的，对不同阴离子表现出极高的亲和力。