Synthesis of Imino[60]fullerenes Using Nitriles and Trimethylsilylmethyl Triflate
摘要:
The synthesis of a new class of fullerene derivatives, 1-imino-4-silylmethyl[60]fullerene derivatives, is described. The anion (C60R1-) of an alkyl- or aryl-adduct of [60]fullerene, (C60RH)-H-1 (R-1 = CH2SiMe3, CH2SiMe2Ph, C6H4-OMe-4, C6H4-NMe2-4, C6H4-CF3-4 and C6H4-OMe-2), was allowed to react with a nitrilium salt [(RCNCH2SiMe3)-C-2][OTf] (Tf = SO2CF3) that was generated in situ by the reaction of Me3SiCH2OTf and a nitrile solvent (RCN)-C-1 (R-2 = Ph and Me). The desired imino[60]fullerene derivative C-60(R-1) [C(=NCH2SiMe3)R-2] was produced in a yield up to 80%. The structure of the product with R-1 = C6H4-OMe-4 and R-2 = Ph was determined by single-crystal X-ray analysis.