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Heating C60Cl6 with either methanol or propan-2-ol under reflux during 140 h yields 1,4-(MeO)2C60 and 1,4-(iPrO)2C60, respectively, the latter reaction being faster due to the greater nucleophilicity of propan-2-ol. The reaction between C60Cl6 and ROH–NaOR yields C60(OR)5Cl (R = Me, Et) both of which are isostructural with C60Ar5Cl. A by-product of the reaction with ethanol–sodium ethoxide is 1,4-(EtO)2C60 showing that chlorine elimination accompanies substitution; this parallels the formation of 1,4-Ph2C60 from the reaction between C60Cl6 and benzene–FeCl3.
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Avent et al. (2001) studied this question.
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