Palladium-Catalyzed Direct Arylation of Polysubstituted Benzofurans
摘要:
An efficient access to 2-substituted 3-arylbenzofurans through a palladium-catalyzed C3 direct arylation of 2-substituted benzofurans with aryl bromides is described. The scope and limitation of this reaction was studied. The method tolerates a variety of functional groups on the aryl halide and has been successfully extended to polysubstituted benzofurans to obtain the corresponding 3-arylbenzofurans with good to excellent yields.
2,3-Diaroyl benzofurans from arynes: sequential synthesis of 2-aroyl benzofurans followed by benzoylation
作者:Kashmiri Neog、Babulal Das、Pranjal Gogoi
DOI:10.1039/c8ob00631h
日期:——
strategy for the direct synthesis of 2-aroyl benzofuransfrom aryne precursors has been developed. This reaction proceeds via C–O and C–C bond cleavage as well as C–O and C–C bond formation in a single reaction vessel. The methodology provides good yields of 2-aroyl benzofurans and tolerates a variety of functional groups. The synthesized 2-aroyl benzofurans were further benzoylated at 3-positions and