C. Drexler et al., DESIGN, SYNTHESIS AND STRUCTURAL STUDIES ON POLYNUCLEATING LIGANDS BASED ON ATROPOISOMERISM OF CATECHOL BEARING PORPHYRINS, Chemical communications, (6), 1998, pp. 689-690
High yield syntheses of all four atropoisomers of the mesotetrakis(o-c
atecholamidophenyl)porphyrin has been achieved; all four atropoisomers
were isolated and characterised by NMR spectroscopy; for the methyl p
rotected 2(alpha beta alpha beta) and 2(alpha 4) atropoisomers obtaine
d as water and chloroform solvates respectively, X-ray analysis was us
ed to assign their structure.