Indium triflate-catalyzed coupling between nitroalkenes and phenol/naphthols: A simple and direct synthesis of arenofurans by a cyclization reaction

Article abstract of DOI:10.1002/asia.201000869

An eye furan eye: A simple and efficient protocol for the synthesis of benzofuran and naphthofuran derivatives catalyzed by indium triflate was developed by coupling α,β-unsaturated nitroalkenes with phenol/naphthols. The present method provides arenofuran derivatives in one pot from readily available starting materials (DCE=1,2-dichloroethane; see scheme). Copyright