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. 2024 Nov 28;15:10338. doi: 10.1038/s41467-024-54208-y

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© The Author(s) 2024

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Fig. 3 — a Control experiment on the direct fluorination of thiophosphonic alkyl ester. b Control experiment of Py with diphenylphosphinic acid (DPPO) as the precursor. c ³¹P NMR monitoring of stepwise reaction intermediates in situ. d Stepwise in situ mass spectrometric monitoring of fluorination using precursor compound S8.