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Updated: Aug 24, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Porphyrin ring contraction: a one-pot reaction leading to divalent corroles
Christophe Jeandon1, Romain Ruppert, Henry J Callot
1Universite Louis Pasteur, UMR CNRS 7123, Faculte de Chimie, 1 rue Blaise Pascal, 67000 Strasbourg, France.
Abstract:
Reaction of nickel meso-tetraarylporphyrins with benzoic anhydride and tin tetrachloride, followed by air oxidation under basic conditions, results in ring contraction, yielding divalent corroles.
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