Figure 4 | Scientific Reports

Figure 4

From: Direct Photochemical C–H Carboxylation of Aromatic Diamines with CO2 under Electron-Donor- and Base-free Conditions

Figure 4

1H NMR (THF-d8, 500 MHz) spectra of (a) t-BuSH, (b) t-Bu2S2, (c) t-Bu2S2 after photo-irradiation (λex = 300 ± 10 nm; 64.5 mW; 3 h), (d) t-BuSH with opda, (e) t-BuSH after photoirradiation (λex = 300 ± 10 nm; 64.2 mW; 3 h) in the presence of opda, (f) t-BuSH with 1, and (g) t-BuSH after photo-irradiation (λex = 300 ± 10 nm; 64.5 mW; 3 h) in the presence of 1, in THF-d8 under CO2.

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