3-chloro-benzenecarboperoxoic acid in dichloromethane T=20°C; 0.25 h;

1: 97.6 percent / TsOH*H2O / benzene / 0.67 h / Heating 2: 94.5 percent / mCPBA / CH2Cl2 / 0.25 h / 20 °C View Scheme

1: 1) s-butyllithium, tetramethylethylenediamine / 1) ether, -78 deg C, 1 h 2) ether, -78 deg C, 1 h, then to RT 2: 95 percent / 2M aq. KOH / Ambient temperature 3: 85 percent / toluene-4-sulphonic acid / benzene / Heating 4: 90 percent / 3-chloroperbenzoic acid / CH2Cl2 / 0 - 20 °C View Scheme

1: 85 percent / toluene-4-sulphonic acid / benzene / Heating 2: 90 percent / 3-chloroperbenzoic acid / CH2Cl2 / 0 - 20 °C View Scheme

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