A versatile copper-induced synthesis of fluorinated oligo (para- phenylenes)

Article abstract of DOI:10.1016/S0040-4020(98)00919-3

Ullmann-like reductive coupling of 1,4-diiodo-2,3,5,6- tetrafluorobenzene, promoted by copper(I) thiophene-2-carboxylate in N- methylpyrrolidinone at room temperature, followed by treatment with lithium aluminum hydride in THF, allowed us to obtain fluorinated poly(para- phenylene) oligomers containing up to five aromatic rings with hydrogen atoms as terminal groups.