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A general and practical methodology for the preparation of novel vinyl-substituted 60fullerene-fused tetrahydrofurans/pyrans/quinolines through palladium-catalyzed decarboxylative heterocyclizations of 60fullerene with vinylethylene/2-alkylidenetrimethylene carbonates and vinyl carbamates was developed. Without additives or ligands, the Pd(PPh3)4-catalyzed transformations undergo decarboxylative O- and N-heteroannulation processes to efficiently furnish structurally diverse 60fullerene-fused heterocyclic derivatives.
Liu et al. (Tue,) studied this question.