Gold(III)-Catalyzed Tandem Reaction of<i>O</i>-Arylhydroxylamines with 1,3-Dicarbonyl Compounds: Highly Selective Synthesis of 3-Carbonylated Benzofuran Derivatives
A highly regioselective protocol for the synthesis of 3-carbonylated benzofuran derivatives has been developed involving the gold(III)-catalyzed tandem condensation/rearrangement/cyclization reaction of O-arylhydroxylamines with 1,3-dicarbonyl compounds.
Cycloaddition of Arynes with Iodonium Ylides: a Mild and General Route for the Synthesis of Benzofuran Derivatives
作者:Xiao-Cheng Huang、Yi-Lin Liu、Yun Liang、Shao-Feng Pi、Feng Wang、Jin-Heng Li
DOI:10.1021/ol800051k
日期:2008.4.1
A mild and general cycloaddition of arynes with iodonium ylides protocol has been developed for the synthesis of benzofurans. In the presence of CsF, ortho-silyl aryltriflates were reacted with iodonium ylides smoothly at room temperature in moderate to good yields.