Synthesis of Fullerene C60 Hybrids with Catecholamines under Ultrasonic Irradiation

Morpholine–fullerene C60 monoadducts were synthesized for the first time by reaction of C60 with biogenic amines (noradrenaline and adrenaline) under ultrasonic irradiation in toluene/DMF at room temperature on exposure to air. The key intermediate in the synthesis of the C60–adrenaline cycloadduct, C60 radical anion generated by single-electron transfer from the adrenaline molecule to C60, was detected by ESR (C60‒·, g = 2.0000, ΔH1/2 = 3.2 G).