Employing Arylacetylene as a Diene Precursor and Dienophile: Synthesis of Quinoline via the Povarov Reaction
Xiaoxiao Yu, Peng Zhao, You Zhou, Chun Huang, Li‐Sheng Wang, Yan‐Dong Wu, An‐Xin Wu
Abstract
A novel I2-mediated Povarov reaction of arylacetylenes and anilines for the synthesis of 2,4-substituted quinolines has been developed, in which arylacetylene first acts as both a diene precursor and dienophile. This work further develops the Povarov reaction to expand the types of diene precursors. Preliminary mechanistic studies indicate that the I2/DMSO system realized the oxidative carbonylation of C(sp)–H of arylacetylene and then undergoes a [4 + 2] cycloaddition reaction.
Topics & Concepts
DieneChemistryCycloadditionQuinolineOrganic chemistryCatalysisPolymer chemistryNatural rubberCatalytic C–H Functionalization MethodsAsymmetric Synthesis and CatalysisSynthesis of Indole Derivatives