title: Colorful Friedel-Crafts chemistry of meso-tetraarylporphyrins. An unexpected route to porphyrinic spiro dimers.
abstract: Under Friedel-Crafts conditions, meso-tetraarylporphyrins give porphyrin spiro dimers in good yield. This reaction involves acylation, acid-catalyzed cyclization, and dimerization. A stable dimer possessing three additional six-membered rings could be isolated and its structure determined. By modifying the substrate and reagents, intermediates could be isolated and characterized. The reactivity of the substrates, the side-reactions, and the concentration requirements to form the dimers, all explain why this reaction remained apparently unexplored in the widely used meso-tetraarylporphyrin series. [reaction: see text]
authors.affiliation: Faculté de Chimie, UMR 7123 CNRS, Université Louis Pasteur, 1 rue Blaise Pascal, 67000 Strasbourg, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Jeandon
authors.forename: Romain
authors.initials: R
authors.lastname: Ruppert
authors.forename: Sébastien
authors.initials: S
authors.lastname: Richeter
authors.forename: Henry J
authors.initials: HJ
authors.lastname: Callot