Since the trifluoromethyl group often acts as a pseudo halogen, we anticipated that aryl trifluoroacetates might behave similarly. A preliminary experiment on pyrolysis of 4- chlorophenyl trifluoroacetate had been reported previously [5]. Thus, we have investigated the preparation of aromatic trifluoromethyl compounds by the decarboxylative thermolysis of aryl trifluoroacetates and observed that in some cases fairly good yields of trifluoromethyl ...