Bates, Craig G. published the artcileSynthesis of 2-Arylbenzo[b]furans via Copper(I)-Catalyzed Coupling of o-Iodophenols and Aryl Acetylenes, Computed Properties of 25753-84-8, the publication is Organic Letters (2002), 4(26), 4727-4729, database is CAplus and MEDLINE.
We report a copper(I)-catalyzed procedure for the synthesis of 2-arylbenzo[b]furans. This protocol can be used to synthesize a variety of 2-arylbenzo[b]furans in good to excellent yields. This method can tolerate a variety of functional groups, does not require the use of expensive additives, and is palladium-free.
Organic Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Computed Properties of 25753-84-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary