Iodine(III)‐Induced Cascade Annulation of β ‐Cyanoporphyrins for the Efficient Synthesis of N ‐Aryliminonaphtho‐Fused and N‐ Aryl‐Carboxamide Porphyrins

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Fused porphyrins demonstrate distinct bathochromic shifts, with Soret increasing by about 42 nm and Q-bands by 80–90 nm.
Electrochemical studies reveal anodically shifted reduction potentials in new porphyrin derivatives synthesized from β-cyanoporphyrins.
Analysis incorporated various characterization techniques including UV–visible spectroscopy and electrochemistry.
This method may enable efficient production of tailored porphyrins for use in light-harvesting and sensing applications.

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Cu(OTf)2-catalyzed protocol yields diverse porphyrins with distinct bathochromic shifts and improved electrochemical properties.

Verma et al. (2025) studied this question.

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