A fluoropolymer flask was charged with 3.14 g (6.0 mmol) of bis[2,6-bis(ethoxymethyl)-4-tert-butylphenyl]disulfide, 18.2 g (120 mmol) of dry cesium fluoride and 35 mL of anhydrous acetonitrile. Chlorine gas (16.00 mmol, 538 mL) was bubbled at the rate of 15 mL/min at 20° C. ...