We describe one-pot synthesis of stable doubly N-fused expanded dibenziporphyrinoids using readily available precursors under acid-catalyzed conditions. The doubly N-fused expanded dibenziporphyrinoids have been synthesized by adopting an inversion followed by fusion strategy. The studies showed that the dibenziporphyrinoids undergo mono fusion initially, but due to the high stability of doubly fused dibenziporphyrinoids, the monofused macrocycles undergo further fusion to form doubly fused dibenziporphyrinoids. The mono fusion and double fusion in these dibenziporphyrinoids were established by X-ray crystallography.

中文翻译：

---

稳定的核修饰双N融合扩展双苯甲卟啉类化合物

我们描述了在酸催化条件下使用容易获得的前体稳定一倍N融合扩大二苯并zip卟啉类化合物的一锅合成。通过采用倒置然后融合策略已经合成了双倍的N-融合的膨胀的二苯甲卟啉类化合物。研究表明，二苯并卟啉类化合物最初经历了单融合，但是由于双融合的二苯并类卟啉类化合物的高稳定性，单融合的大环化合物经历了进一步的融合以形成双融合的二苯并类卟啉类化合物。通过X射线晶体学确定了这些二苯并卟啉类化合物中的单融合和双融合。