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. 2019 Oct 18;10:4743. doi: 10.1038/s41467-019-12722-4

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© The Author(s) 2019

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Fig. 5 — Sequential and orthogonal C–H functionalization of heteroarenes. a pH-controlled orthogonal C–H functionalization of heteroarenes. b Radical polarity-controlled orthogonal C–H functionalization of heteroarenes. The structure of the R group is shown in Fig. 4