Tailoring the perimeter of the porphyrin macrocycle with diverse substituents in defined patterns is essential for studies in biomimetic and materials chemistry. 1, 2 Small nitrogen heterocycles are substituents of particular interest, 3 providing sites for metal coordination, hydrogenbonding, alkylation (water solubilization), and modulation of the electronic properties of the porphyrin. Indeed, pyridine substituents have yielded a broad array of ...