Synthesis of N-Substituted Morpholine C60-Fullerene Adducts in the Presence of LiOH and Lead(IV) Acetate

Abstract

A N -phenyl-substituted morpholine adduct of C60 fullerene, 1,9-[4′-phenylmorpholine]-1,9-dihydro-(C60-Ih) [5,6]fullerene, was obtained for the first time with a yield of 56% in the reaction of 2-phenylaminoethanol with fullerene in the presence of LiOH and Pb(OAc)4 at room temperature for 1 h. The amino alcohol with an electron donor group (2-methylaminoethanol) in the reaction with fullerene showed a higher reactivity: the product 1,9-[4′-methylmorpholine]-1,9-dihydro-(С60-Ih)[5,6]fullerene was isolated in 68% yield. The presence of electron-withdrawing groups at the α- or β-carbon atom relative to the nitrogen atom in amino alcohols [carboxylic (2-amino-3-hydroxypropanoic acid, serine) or carbonyl (aminoacetic acid) groups] does not contribute to the reactions with fullerene under the studied conditions.