One-pot Synthesis of Dibenzofurans via SNAr and Subsequent Ligand-free Palladium-catalyzed Intramolecular Aryl-aryl Cross-coupling Reactions under Microwave Irradiation
Synthesis of Dibenzofurans Directly from Aryl Halides and ortho-Bromophenols via One-Pot Consecutive SNAr and Intramolecular Palladium-Catalyzed Aryl-Aryl Coupling Reactions
作者:Hui Xu、Ling-Ling Fan
DOI:10.1248/cpb.56.1496
日期:——
A series of dibenzofurans were efficiently and conveniently synthesized via one-pot consecutive C(sp(2))-O bondformation reaction (SNAr) in the presence of anhydrous K(2)CO(3), followed by C(sp(2))-C(sp(2)) bondformation reaction (intramolecular palladium-catalyzed aryl-aryl coupling reaction) between aryl halides and ortho-bromophenols. The desired dibenzofurans were obtained in 32-99% isolated