Facile Access to Functionalized Spiro[indoline-3,2′-pyrrole]-2,5′-diones via Post-Ugi Domino Buchwald–Hartwig/Michael Reaction
作者:Nandini Sharma、Zhenghua Li、Upendra K. Sharma、Erik V. Van der Eycken
DOI:10.1021/ol5019079
日期:2014.8.1
presented via a palladium-catalyzed post-Ugi cascadecyclization approach involving a Buchwald–Hartwig/Michael reaction sequence. The method allows the easy construction of a library of spirooxindoles in moderate to good yields starting from readily available precursors. In addition, alkynoic acids are replaced with α,β-unsaturated acids leading to variably substituted spirooxindoles.