1: 89 percent / CuF2*2H2O / diethyl ether / 12 h / Ambient temperature 2: 79 percent Chromat. / KF, MCPBA / dimethylformamide / 5 h View Scheme

potassium fluoride; 3-chloro-benzenecarboperoxoic acid in N,N-dimethyl-formamide 5 h; Ambient temperature;