Synthesis and separation of meso-tetraarylporphyrins with C i symmetry

Abstract
5,15-Di(o-acetylaminophenyl)-10,20-di-1-(2-methoxynaphthyl)porphyrin was prepared by way of o-acetylaminophenyl-2,2′-dipyrrylmethane; the expected 5 atropisomers (αα′ββ′, αα′βα′, αβ′αβ′, αα′αβ′, αα′αα′) have been separated and characterised on the basis of their spectroscopic properties and thermal isomerisation behaviour.

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