Electrophilic Nitration of meso-Tetraarylporphyrin Complexes at the β-Pyrrolic Position
Autor: | Stanislaw Ostrowski, Dorota Szerszen, Marek Ryszczuk |
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Rok vydání: | 2005 |
Předmět: | |
Zdroj: | Synthesis. 2005:819-823 |
ISSN: | 1437-210X 0039-7881 |
DOI: | 10.1055/s-2005-861853 |
Popis: | The selective nitration of meso-tetraphenylporphyrin complexes is described. The reaction of the above porphyrinates with 25% HNO 3 or 5% HNO 3 at room temperature or 0-5 °C, respectively, results in the formation of the corresponding mono β-nitroporphyrins (56-81%), accompanied by small amounts of a mixture of β,β-dinitro by-products. The results described above are the first known examples of β-mononitration of meso-tetraarylporphyrin complexes under electrophilic conditions. Reactions with nickel(II), copper(II), and cobalt(II) porphyrinates are discussed. |
Databáze: | OpenAIRE |
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