... free heterocyclic radicals 1,2 required 3 4-substituted 1-iodo-2,6-bis(propylthio)benzenes 1 as synthetic intermediates. ... Calcd for C 10 H 10 Cl 2 S: C, 45.30; H, 3.80. ... The volume of THF was reduced, and the mixture was poured into water and extracted (CH 2 Cl 2 /hexanes, 1:7 ...