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A palladium-catalyzed decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides with cyclic diaryliodonium salts to synthesize triphenylenes has been developed. The reaction shows broad substrate scope with a high yield of up to 99%, and it provides an efficient and fast way to access functionalized triphenylenes in only one hour.


Lingyu Huang, Rongrong Xie, Chaoying Wen, Yanyan Yang, Yiwen Wang, Shiyan Ren, Bin Huang, Shiqing Li. Decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides and cyclic iodoniums towards triphenylenes. Organic & biomolecular chemistry. 2022 May 18;20(19):3913-3916

PMID: 35507316

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