[60]Fullerene-Fused Cyclopentanes: Mechanosynthesis and Photovoltaic Application

Org Lett. 2023 Feb 24;25(7):1229-1234. doi: 10.1021/acs.orglett.3c00332. Epub 2023 Feb 14.

Abstract

The mechanochemical cascade reaction of [60]fullerene with 3-benzylidene succinimides, diethyl 2-benzylidene succinate, or 2-benzylidene succinonitrile in the presence of an inorganic base has been investigated under solvent-free and ball-milling conditions. This protocol provides an expedient method to afford various [60]fullerene-fused cyclopentanes, showing advantages of good substrate scope, short reaction time, and solvent-free and ambient reaction conditions. Furthermore, representative fullerene products have been applied in inverted planar perovskite solar cells as efficient cathode interlayers.