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
Palladium-catalyzed paraformaldehyde insertion: a three-component synthesis of benzofurans
作者:Xiufang Cheng、Yi Peng、Jun Wu、Guo-Jun Deng
DOI:10.1039/c6ob00198j
日期:——
An efficient procedure for 2-aroylbenzofuran preparationfrom 2-bromophenols, phenacyl bromides and paraformaldehyde is described. The cheap and stable paraformaldehyde served as the carbon source via an in situ formylation reaction.
Enantioselective Reduction of Benzofuranyl Aryl Ketones
作者:Matthew Clarke、Ian Carpenter
DOI:10.1055/s-0030-1259080
日期:2011.1
Enantioselective transfer hydrogenation of benzofuranyl arylketones proceeds with moderate to good enantioselectivity even when the aryl group is not sterically differentiated by ortho-substituents. The best results are obtained with substrates that are functionalised by electron-withdrawing aryl groups that contrast with the electron-rich benzofuran, which is consistent with [Ru― ArC―H]·Ar π interactions