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Creators/Authors contains: "Dai, Hui-Xiong"

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  1. ; ; ; ; ; (, Organic Letters)
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  4. ; ; ; ; (, Chemical Science)
    Although chelation-assisted C–H olefination has been intensely investigated, Pd( ii )-catalyzed C–H olefination reactions are largely restricted to acrylates and styrenes. Here we report a quinoline-derived ligand that enables the Pd( ii )-catalyzed olefination of the C(sp 2 )–H bond with simple aliphatic alkenes using a weakly coordinating monodentate amide auxiliary. Oxygen is used as the terminal oxidant with catalytic copper as the co-oxidant. A variety of functional groups in the aliphatic alkenes are tolerated. Upon hydrogenation, the ortho -alkylated product can be accessed. The utility of this reaction is also demonstrated by the late-stage diversification of drug molecules. 
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