Synthesis and reactions of 2,2-[60]fullerenoalkanoyl chlorides.
2,2-[60]Fullerenoalkanoyl chlorides (1a-d) were easily and securely prepared from the corresponding 2,2-[60]fullerenoalkanoic acids (2a-d) by the reaction with thionyl chloride in an unusual mixed solvent, CH2Cl2/dioxane. The characterization of 1a-d by 1H and 13C NMR, FT-IR, and MALDI-TOF-MASS was conducted for the first time. The 2,2-[60]fullerenoalkanoyl chlorides thus obtained were readily converted to the corresponding amides and esters in moderate to excellent yields by the condensation with amines and alcohols, respectively. Upon applying the condensation, [60]fullerene-biomolecule hybrids were easily prepared.
Tada
Tomoyuki
T
Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Ishida
Yasuhiro
Y
Saigo
Kazuhiko
K