On corrole chemistry. An isomerization study and oxidative cleavage of the corrole macroring to a biliverdin structure
作者:Catherine Tardieux、Claude P. Gros、Roger Guilard
DOI:10.1002/jhet.5570350430
日期:1998.7
present paper, we report the synthesis of free 5- and 10-monophenylcorroles, 4 and 3 respectively as well as the first example of molecular oxygen oxidation of the corrole macrocycle identified as an open chain tetrapyrrole (biliverdin) structure 7. Reaction of 1 and 2 in acetic acid leads to a mixture of two a,c-biladienes 3b and 4b and therefore to a mixture of two corroleisomers 3 and 4. Reaction of 1
The synthesis and characterization of two new cobalt(III) complexes of corrole: [triphenylphosphine-(2,3,7,8,12,13,17,18-octamethyl-10-phenylcorrolato)cobalt(III)] and [triphenylphosphine(2,3,7,8,12,13,17,18-octa-methyl-5,10,15-triphenylcorrolato)cobalt(III) are reported. Such complexes represent the first examples of meso-substituted corrolates reported in the literature. The insertion of one or three phenyl groups at the meso-positions of the macrocyclic ligand has been achieved by designing different synthetic strategies. The spectroscopic characterization of the complexes shows the peculiarity of the corrole ligand which maintains a planar structure despite the steric hindrance of the peripheral substituents.