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- Title
Synthesis and Acid–Base Properties of β-Octabromo-Substituted Unsymmetrical Nitrophenylporphyrins.
- Authors
Ivanova, Yu. B.; Chizhova, N. V.; Mamardashvili, N. Zh.
- Abstract
The bromination of [5-(4-nitrophenyl)-10,15,20-triphenylporphyrinato]cobalt(II) and [5,10,15-tris-(4-nitrophenyl)-20-phenylporphyrinato]cobalt(II) with N-bromosuccinimide in a mixture of chloroform and dimethylformamide gave [2,3,7,8,12,13,17,18-octabromo-5-(4-nitrophenyl)-10,15,20-triphenylporphyrinato]-cobalt(II) and [2,3,7,8,12,13,17,18-octabromo-5,10,15-tris(4-nitrophenyl)-20-phenylporphyrinato]cobalt(II). Treatment of the cobalt complexes with a mixture of perchloric and sulfuric acids afforded the corresponding metal-free porphyrins. Electron absorption, 1H NMR, and mass spectra of the synthesized compounds were studied, and acidity and basicity constants of the porphyrin ligands in acetonitrile were determined.
- Subjects
MASS spectrometry; PERCHLORIC acid; PORPHYRINS; SULFURIC acid; BROMINATION; METALLOPORPHYRINS; COBALT
- Publication
Russian Journal of Organic Chemistry, 2019, Vol 55, Issue 10, p1554
- ISSN
1070-4280
- Publication type
Article
- DOI
10.1134/S1070428019100142