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HPLC traces of 7 mol % Eu(OTf)3-catalyzed Mukaiyama aldol reaction in 10% H2O/THF (v/v) after 2, 18, 34, 50, and 66 min. The increase in peak 3 with time corresponds to an increase in product concentration. The y-axis shows absorbance at 210 nm in arbitrary units.
