Efficient microwave-assisted one-pot three-component synthesis of 2,3-disubstituted benzofurans under Sonogashira conditions
作者:Nataliya A. Markina、Yu Chen、Richard C. Larock
DOI:10.1016/j.tet.2013.02.003
日期:2013.4
efficient one-pot method for the synthesis of 2,3-disubstituted benzo[b]furans from commercially available 2-iodophenols, terminal acetylenes and aryl iodides has been developed utilizing Sonogashira reaction conditions. After an initial Sonogashira coupling of the 2-iodophenol with the terminal alkyne, cyclization involving the aryl iodide provides the 2,3-disubstituted benzo[b]furan in good to excellent
Direct Arylation of Benzo[<i>b</i>]furan and Other Benzo-Fused Heterocycles
作者:Toan Dao-Huy、Maximilian Haider、Fabian Glatz、Michael Schnürch、Marko D. Mihovilovic
DOI:10.1002/ejoc.201403125
日期:2014.12
The directarylation of benzo[b]furan, benzo[b]thiophene, and indole has been studied by using aromatic bromides as the aryl source. The protocol employing common reagents and a Pd catalyst has led to the regioselective arylation of these heterocycles at the 2-position. A range of functional groups were tolerated, providing quick access to a variety of arylated benzo-fusedheterocycles that would be
Synthesis of Conformationally Restricted 2,3-Diarylbenzo[<i>b</i>]furan by the Pd-Catalyzed Annulation of <i>o</i>-Alkynylphenols: Exploring a Combinatorial Approach
作者:Youhong Hu、Kenneth J. Nawoschik、Yun Liao、Jian Ma、Reza Fathi、Zhen Yang
DOI:10.1021/jo0303160
日期:2004.4.1
The palladium/bpy-catalyzed annulation of o-alkynylphenol with various aryl halides to generate diversified 2,3-diarylbenzo[b]furan is herein described. This method provides an efficient synthetic pathway for the combinatorial synthesis of conformationally restricted 2,3-diarylbenzo[b]furan for drug discovery.