Fig. 2. Substrate scope. Standard reaction condition: lithium benzoate (0.20 mmol, 1.0 equiv.), sulfoximine (2.5 equiv.), Cu(OTf)2 (2.5 equiv.), LiOMe (1.0 equiv.), DTBP (2.0 equiv.), MeCN (c = 25 mM), 18 h purple LEDs irradiation, 35 °C. aReaction was performed at 1.0 mmol scale. bReaction condition: lithium benzoate (0.20 mmol, 1.0 equiv.), sulfoximine (2.5 equiv.), Cu(MeCN)4BF4 (2.5 equiv.), 1-fluoro-2,4,6-trimethylpyridinium triflate (2.5 equiv.), DTBP (2.0 equiv.), MeCN (c = 25 mM), 18 h purple LEDs irradiation, 35 °C. DTBP = 2,6-di-tert-butylpyridine.
