Abstract:Palladium-Catalyzed Oxidative Double C-H Functionalization/Carbonylation for the Synthesis of Xanthones. -Xanthones with different functional groups (III) are obtained by reaction of diarylethers (I) with carbon monoxide in the presence of a simple catalytic system consisting of Pd(OAc)2, K2S2O8, and trifluoroacetic acid. The method is applicable to symmetrical as well as unsymmetrical diaryl ethers. -(ZHANG, H.; SHI, R.; GAN, P.; LIU, C.; DING, A.; WANG, Q.; LEI*, A.; Angew. Chem., Int. Ed. 51 (2012) 21, 5204… Show more
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