Room‐Temperature Autoconversion of Free‐Base Corrole into Free‐Base Porphyrin

Synthesis, X-structure and solvent induced electronic states tuning of meso-tris(4-nitrophenyl)corrolato-copper complex

“…The electronic absorption spectra of the copper-corroles are exceptionally sensitive to peripheral substituents [13,17,18,26]. Substitution with electron-withdrawing group causes red-shifted optical spectra.…”

“…Corroles as free base are less stable than their porphyrin analogs in solution. Depending on the type and position of the substituents, corroles can readily transform to various products [13].…”

Synthesis, Structure, Spectroscopic, and Electrochemical Properties of Highly Fluorescent Phosphorus(V)–meso‐Triarylcorroles

“…However, the average P À N distances in both P V -corrole complexes I and 1 were shorter than that in compound III (1.89 ) [10a,e] as well as the average M À N distance in other metal complexes of meso-triarylcorroles reported. [7,8] Moreover, compound 1 was more planar than its corresponding free-base corrole [14] and metallocorroles. [15] In the free-base corrole, the three inner NH protons caused steric crowding, thereby resulting in strain in the corrole macrocycle.…”

Extrusion of Boron(III) Subporphyrin from meso‐Heptakis(pentafluorophenyl)[32]heptaphyrin upon Cooperative CuII and BIII Metalation

“…In recent years, there has been a surge in the discovery of chemical transformations that interconnect different porphyrinic macrocycles. [1] Recent representative examples include a transannular skeletal rearrangement of a diketo octaphyrin(1.1.1.0.1.1.1.0) to a spirodicorrole upon metalation with Ni II ion, [2] a porphyrin-to-corrole ring contraction upon metalation with [Re 2 (CO) 10 ], [3] a spontaneous corrole-toporphyrin ring expansion, [4] a corrole-to-hemiporphycene ring expansion in the reaction with carbon tetraiodide, [5] and double pyrrolic rearrangement of meso-aryl-substituted hexaphyrin to doubly N-confused hexaphyrin upon treatment with Cu I ion. [6] Additionally, we reported the thermal splitting reaction of a bis-copper(II) octaphyrin into two copper(II) porphyrins, a novel topological process that proceeds quantitatively with perfect material balance in a metathesis fashion (Scheme 1).…”