Small is beautiful: A ring-contracted sister of porphyrin, norcorrole, has been synthesized efficiently as a stable molecule by a nickel-templated strategy. The norcorrole complex is stable but exhibits a distinct antiaromatic character according to the Hückel rule. Oxidation of the norcorrole complex provides an aromatic oxacorrole complex.
Klein ist wunderschön: Das ringverengte Porphyrin‐Derivat Norcorrol wurde effizient an einem Nickel‐Templat synthetisiert. Der resultierende Norcorrol‐Komplex ist zwar nach der Hückel‐Regel deutlich antiaromatisch, erwies sich aber als stabil und konnte durch Oxidation in einen aromatischen Oxacorrol‐Komplex überführt werden.
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