1.1: Mg / diethyl ether 1.2: diethyl ether 2.1: NaI / dimethylformamide; acetone / 20 h / Heating View Scheme

1.1: Mg / diethyl ether 1.2: diethyl ether 2.1: NaI / dimethylformamide; acetone / 20 h / Heating 3.1: monoperoxyphthalic acid / CH2Cl2 / 0 - 5 °C View Scheme

1: With C2H6BrOS(1+) in dichloromethane T=-78 - 0°C; 1 h; Inert atmosphereElectrochemical reaction; 2: With triethylamine in dichloromethane T=0 - 25°C; 1 h; Inert atmosphereElectrochemical reaction;

hydrogen bromide; bromine in diethyl ether

1.1: Mg / diethyl ether 1.2: diethyl ether 2.1: NaI / dimethylformamide; acetone / 20 h / Heating 3.1: monoperoxyphthalic acid / CH2Cl2 / 0 - 5 °C View Scheme