Sequential click modification of a lithium-ion endohedral fullerene connecting small molecules through a dieneazide linker

Abstract

A versatile method for the chemical modification of a lithium-ion endohedral fullerene (Li⁺@C₆₀) to connect various small molecules is described. The designed dieneazide linker enables the facile connection of Li⁺@C₆₀ with small molecules bearing a terminal alkyne via Huisgen annulation and a subsequent Diels–Alder reaction. This strategy significantly expands the diversity of small molecules to be attached by Li⁺@C₆₀.