DOI: 10.1039/A806563B
(Paper)
Reference Section for: Chem. Commun., 1998, 2355-2356
Cruciform porphyrin pentamers
(Note: The full text of this document is currently only available in the PDF Version )
M. Graça H. Vicente, Mark T. Cancilla, Carlito B. Lebrilla and Kevin M. Smith
Abstract
Cruciform porphyrin pentamers 15 and 16 are obtained in good yield by acid-catalyzed tetramerization of ZnII–pyrroloporphyrin 14, followed by oxidation with DDQ; pyrroloporphyrins are in turn obtained from the corresponding pyrrolochlorins by Diels–Alder type reactions of porphyrins involving thermal extrusion of sulfur dioxide from a pyrrole-fused 3-sulfolene.
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