The modification of peripheral positions of corroles by introduction of nitro groups is an important functionalization of this macrocycle. The nitro substituent strongly influences the corrole behavior leading to the preparation of macrocycles with different properties, which can be of interest for their exploitation as catalysts, sensing layers in chemical sensors or in the field of supramolecular chemistry. In the last few years we have developed different routes for the β-nitration of the corrole ring, and we report here novel synthetic protocols which can allow the formation of tri- and tetra-nitro derivatives, as demonstrated by X-ray analysis. In all of the methodologies used, the presence of isocorrole species as reaction intermediates was established, which regenerated the corresponding corrole by metal insertion.

中文翻译：

---

corroles 硝化的合成方案

通过引入硝基来修饰corroles的外围位置是该大环的重要功能化。硝基取代基强烈影响导致制备具有不同性质的大环化合物的腐蚀行为，这对于将它们用作催化剂、化学传感器中的传感层或在超分子化学领域中可能是有意义的。在过去的几年里，我们开发了不同的途径来进行 corrole 环的 β-硝化，我们在这里报告了新的合成方案，可以形成三硝基和四硝基衍生物，正如 X 射线分析所证明的那样。在所有使用的方法中，都建立了异戊二烯作为反应中间体的存在，它通过金属插入再生了相应的咔咯。