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Abstract
An efficient palladium-copper catalyzed regioselective C–C bond cleavage/C–H bond activation/C–C bond reformation reaction to synthesize 9,9-diaryl-xanthenes has been developed. A variety of 9,9-diaryl-xanthenes were synthesized in moderate to good yields by 9H-xanthene-9-carboxylic acid/2-(9H-xanthen-9-yl)-cycloketones and aromatics bearing electron-donating functional groups through the decarboxylation/de-cycloalkanonylative coupling reactions.
Additional information
Funding
This work was financially supported by the Natural Science Foundation of Shandong Province (ZR2019QB022), the Doctoral Scientific Research Startup Foundation of Liaocheng University (No. 31805403) and the College Students’ Innovation and Entrepreneurship Training Program of Liaocheng University (CXCY2022190).