Method of synthesis of water soluble fullerene polyacids using a macrocyclic malonate reactant
US6538153B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Sep 25, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/896
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for synthesizing compounds of the formula where C60 is a C60 fullerene. The method comprises the steps of forming a macrocyclic malonate compound of the formula where 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; reacting said macrocyclic malonate compound with C60 to form an adduct of the formula where the Z radicals are linked together to form said macrocycle adduct; and hydrolyzing said macrocycle adduct to form a compound of the formula
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.