Table 3.
Spin-Center Shift-Enabled Enantioselective α-Alkylation of Aldehydes with α-Acetoxy Ketonesa
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Acetate (0.5 mmol), aldehyde 45 (2.0 equiv), lutidine (50 mol %), lutidine·HOTf (20 mol %), organocatalyst 8 (20 mol %), and photocatalyst 18 (0.5 mol %) were irradiated in DMA with a 34 W blue LED lamp at 0 °C. Isolated yields are reported. Enantioselectivities were determined by chiral HPLC analysis.