Copper-catalyzed direct synthesis of furans and thiophenes via decarboxylative coupling of alkynyl carboxylic acids with H2O or Na2S

作者: Francis Mariaraj Irudayanathan , Gabriel Charles Edwin Raja , Sunwoo Lee

DOI: 10.1016/J.TET.2015.05.017

关键词: ArylCopper catalyzedYield (chemistry)CatalysisChemistryThiopheneCopperFuranOrganic chemistryLigand

摘要: 2,5-Diaryl-substituted furans were synthesized from the copper-catalyzed decarboxylative coupling of aryl-substituted aryl propiolic acids in presence H2O. The homocoupling alkynyl carboxylic provided 1,4-diaryldiynes, which then reacted with H2O to give desired through cyclization. Addition copper catalyst was critical, and addition a ligand increased yield products both cyclization reactions. In addition, thiophenes could be obtained when reaction conducted Na2S.

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