Copper-Catalyzed N-Heteroannulation of [60]Fullerene with Aryl Sulfonamides and Paraformaldehyde: Synthesis and Functionalization of [60]Fullerene-Fused Imidazolidines

• DOI: 10.1021/acs.orglett.5c00518
• Publication Date: 2025-03-12T18:53:11Z
• Authors: Zheng-Chun Yin; Majid Hussain; Shi-Qi Ye; Yong-Ming Lu; Chuang Niu; Qian-Wen Zhang; Jian-Feng Li; Guan-Wu Wang
• Keywords: Paraformaldehyde; Surface Modification

The Cu(II)-catalyzed N-heteroannulation reaction of [60]fullerene (C60) with aryl sulfonamides and paraformaldehyde has been disclosed for the synthesis diverse C60-fused imidazolidines, which one or both ArSO2 moieties could be removed selectively. Further transformations into unexpected bicyclic 1,2,3,4-adduct imidazolidinium iodide salt have also demonstrated. A plausible mechanism is proposed on basis control experiments. employed as an additive in PC61BM layer inverted planar perovskite solar cells to increase power conversion efficiency.