Liquid-phase and biphasic chlorination of some iodoarenes to form (dichloroiodo)arenes with sodium peroxodisulfate as the oxidant

Abstract

Liquid-phase and biphasic (CCl 4 /concd hydrochloric acid) chlorination of some iodoarenes to form the corresponding (dichloroiodo)arenes, prepared in 60–100% crude yields, are reported; dichlorine is produced as follows: Na 2 S 2 O 8 + 2 HCl (conc. aq.) → Cl 2 + 2 NaHSO 4 .