Abstract
AbstractA clean, transition metal‐ and oxidant‐free photochemical protocol was described for the direct trifluoromethylation of coumarins with Togni reagent. The reaction proceeded smoothly under mild condition to afford regioselective 3‐trifluoromethyl coumarins, moreover novel bis‐trifluoromethylated coumarins were formed. Preliminary bioactivity evaluation on some products showed potential antifungal activities.
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