一种基于含七元环的六并六苯并蔻的大环化合物。
A Macrocycle Based on a Heptagon-Containing Hexa-peri-hexabenzocoronene.
作者信息
Jiménez Vicente G, David Arthur H G, Cuerva Juan M, Blanco Victor, Campaña Araceli G
机构信息
Departamento de Química Orgánica, Unidad de Excelencia de Química aplicada a Biomedicina y Medio Ambiente, Facultad de Ciencias, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071, Granada, Spain.
出版信息
Angew Chem Int Ed Engl. 2020 Aug 24;59(35):15124-15128. doi: 10.1002/anie.202003785. Epub 2020 Jun 15.
A cyclophane is reported incorporating two units of a heptagon-containing extended polycyclic aromatic hydrocarbon (PAH) analogue of the hexa-peri-hexabenzocoronene (HBC) moiety (hept-HBC). This cyclophane represents a new class of macrocyclic structures that incorporate for the first time seven-membered rings within extended PAH frameworks. The saddle curvature of the hept-HBC macrocycle units induced by the presence of the nonhexagonal ring along with the flexible alkyl linkers generate a cavity with shape complementarity and appropriate size to enable π interactions with fullerenes. Therefore, the cyclophane forms host-guest complexes with C and C with estimated binding constants of K =420±2 m and K =(6.49±0.23)×10 m , respectively. As a result, the macrocycle can selectively bind C in the presence of an excess of a mixture of C and C .
据报道，一种环番包含两个七元环扩展多环芳烃（PAH）类似物的单元，该类似物是六并六苯并蔻（HBC）部分（七元HBC）。这种环番代表了一类新型的大环结构，首次在扩展的PAH框架中纳入了七元环。由非六边形环的存在以及柔性烷基连接体引起的七元HBC大环单元的鞍形曲率产生了一个具有形状互补性和合适尺寸的空腔，以实现与富勒烯的π相互作用。因此，该环番与C和C形成主客体配合物，估计结合常数分别为K = 420±2 M和K =(6.49±0.23)×10 M。结果，在存在过量的C和C混合物的情况下，大环可以选择性地结合C。
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