Copper‐Catalysed Decarboxylative Trifluoromethylation of β‐Ketoacids

An efficient method for Cu‐catalyzed decarboxylative trifluoromethylation of β‐ketoacids to achieve α‐trifluoromethyl ketones was developed. A wide variety of synthetically useful α‐trifluoromethyl ketones were obtained in modest to good yields under mild reaction conditions. The present method also exhibits good functional‐group compatibility.