title: Ring expansions and contractions of metalloporphyrins.
abstract: Ring expansions or contractions of metalloporphyrins are unusual reactions. In this review, the author will show how the step by step analysis of two serendipitous reactions allows one to unveil their mechanism and to point out the key role of nickel ion in these rearrangements.
authors.affiliation: Institut de Chimie, Université Louis Pasteur, 1 rue Blaise Pascal, 67000, Strasbourg, France.
authors.forename: Henry J
authors.initials: HJ
authors.lastname: Callot
mesh_terms: D007202:Indicators and Reagents; D008665:Metalloporphyrins / Q000138:chemical synthesis / Q000737:chemistry*; D008958:Models, Molecular; D009532:Nickel; D009584:Nitrogen / Q000737:chemistry; D011166:Porphyrins / Q000737:chemistry
chemical_list: D007202:Indicators and Reagents; D008665:Metalloporphyrins; D011166:Porphyrins; D009532:Nickel; D009584:Nitrogen