1.
Chem Asian J
; 18(6): e202300018, 2023 Mar 14.
Artigo
em Inglês
| MEDLINE
| ID: mdl-36725682
RESUMO
Intramolecular fusion reactions of a p-terphenylene-bridged NiII porphyrin dimer gave different products, depending upon reaction conditions. Oxidation with Fe(OTf)3 provided syn- and anti-doubly heptagon-fused NiII porphyrin dimers showing enlarged π-electronic networks, probably via a radical mechanism, while treatment with methanesulfonic acid provided a spiro-pentagon-bridged NiII chlorin dimer via acid-catalyzed Friedel-Crafts type cyclization. Further, a doubly octagon-fused NiII porphyrin dimer was synthesized via a sequence of double meso-formylation, reduction to corresponding diol, and BF3 -catalyzed cyclization.