Synthesis of Disubstituted 1,2-Dihydro[60]fullerenes with Well-Defined Structure by Addition of 1-Alkoxy-1-chloroethanes to 2-(1-Octynyl)-1,2-dihydro[60]fulleren-1-ide Ion

We report the preparation of disubstituted 1,2-dihydro[60]fullerenes having functional groups, namely 1-(1-octynyl)-2-(1-isobutoxyethyl)-1,2-dihydro[60]fullerene and 1-(1-octynyl)-2-[1-(2-acetoxyethoxy)ethyl]-1,2-dihydro[60]fullerene, by coupling 2-(1-octynyl)-1,2-dihydro[60]fulleren-1-ide ion with carbon electrophiles derived from vinyl ethers. The structure and redox properties of the products were examined by 1 H and 13 C NMR spectra and cyclic voltammetry.