Electrophilic Nitration of meso-Tetraarylporphyrin Complexes at the β-Pyrrolic Position

Autor: Stanislaw Ostrowski, Dorota Szerszen, Marek Ryszczuk
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