sodium perborate in chloroform; acetic acid T=50°C; 18 h;

1: With potassium hydroxide; sulfur in bis [2-(2-methoxyethoxy)ethyl] ether T=130 - 180°C; 6 h; 2: With sulfuric acid in diethyl ether; bis [2-(2-methoxyethoxy)ethyl] ether; water T=20°C; 3: With sulfuric acid; dihydrogen peroxide; sulfur; acetic acid; CaO more than 3 stages;

boron tribromide in dichloromethane

1: With sodium tungstate hydrate; dihydrogen peroxide; sodium acetate; acetic acid in water T=60 - 80°C; 23.5 h; 2: With hydrogenchloride in water T=80°C; Product distribution / selectivity;

1: 88 percent / m-chloroperbenzoic acid / CHCl3 / 96 h / Ambient temperature 2: 30 percent / BBr3 / CH2Cl2 View Scheme