M. Dauria et G. Mauriello, BIS(TRIFLUOROACETOXY)IODOBENZENE-IODINE SYSTEM - AN EFFICIENT AND SELECTIVE REAGENT FOR IODINATION OF THIOPHENE DERIVATIVES, Tetrahedron letters, 36(27), 1995, pp. 4883-4884
Bis-(trifluoroacetoxy)iodobenzene - iodine system is a good iodinating
reagent of thiophene derivatives giving products with iodine atom in
alpha-position on the thiophene ring.