Fig. 4: Photocatalytic debromination of α-bromoacetophenone derivatives. | Nature Communications

Fig. 4: Photocatalytic debromination of α-bromoacetophenone derivatives.

From: Ultrastable amide-like isoquinolone-linked covalent organic frameworks for accelerated photocatalytic single-electron transfer transformation

Fig. 4

a Catalytic efficiency and compatibility studies. b EPR spectra of PBN-radical adduct generated after being irradiated for 4 min during the reaction (from top to bottom: Im-COF-1, Am-COF-1 and IQO-COF-1). Reaction condition: α-bromoacetophenone (0.4 mmol), Hantzsch ester (0.44 mmol), K2CO3 (0.8 mmol), COFs (5 mg), DMF (1 mL), 18 W blue LEDs (460-465 nm), 1 h under nitrogen atmosphere, isolated yield. DMF, N,N-dimethylformamide.

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