| Summary: | Palladium is a precious metal, which has been widely used for various organic transformations in the past decades. Currently, the palladium-catalyzed direct activation of the aromatic ring C–H bonds is one of the frontier areas in organic chemistry, and the progress of research in this field is very rapid. Compared with other transition metals, palladium has the advantages of high catalytic activity and strong selectivity. Combining the domestic and foreign scholars' research on this aspect, this paper summarizes the research progress of the palladium-catalyzed activation of aromatic ring C–H bonds in the past ten years. Keywords: Aromatic ring C–H bonds, Palladium catalyst, Direct conversion
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