Patent ID: 6538153
Filing Date: 2003-03-25
Classification: C07C,Y10S

Abstract:
A method for synthesizing compounds of the formula where C60 is a C60 fullerene, comprising the steps of:(a) forming a macrocyclic malonate compound of the formula â€ƒwhere each Z is the same or different and is a straight-chain or branched-chain aliphatic radical having from 1-30 carbon atoms which may be unsubstituted or monosubstituted or polysubstituted by identical or different substitutents, in which radicals up to every third CH2 unit can be replaced by O or NR where R is alkyl having 1-20 carbon atoms or a chain containing unsubstituted or substituted aryl or other cyclic groups and n is an integer from 2 to 10; (b) reacting said macrocyclic malonate compound with C60 to form a macrocycle adduct of the formula â€ƒwhere the Z radicals are linked together to form said macrocycle adduct; and (c) hydrolyzing said macrocycle adduct to form a compound of the formula