fig5

Figure 5. Chiral 2-carboxylic acid dihydroindole catalyzed enantioselective cyclopropanations of α,β-unsaturated aldehydes. This figure is used with permission from the American Chemical Society[44].
Figure 5. Chiral 2-carboxylic acid dihydroindole catalyzed enantioselective cyclopropanations of α,β-unsaturated aldehydes. This figure is used with permission from the American Chemical Society[44].
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