Preparation of meso-Tetraarylporphyrins Nitrated in Two Neighboring Aromatic Rings

Abstract

Selective nitration of tetraphenylporphyrin (TPP) and its derivatives is reported. The reaction of meso-aryl substituted porphyrins with fuming yellow nitric acid (d = 1.53) at the temperature 0–20°C results in the formation of 5,10-bis(4-nitroaryl)-15,20-diarylporphyrins with yields of 30–83%.

Keywords:

• meso-Tetraarylporphyrins
• 5-10-bis(4-Nitrophenyl)-15, 20-diphenylporphyrin and its derivatives
• Nitration