Enantioselective synthesis of spirooxindole benzoquinolizines via organo-catalyzed cascade reactions†,10.1039/C6OB02157C

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Enantioselective synthesis of spirooxindole benzoquinolizines via organo-catalyzed cascade reactions†

Yu Tan,Er-Lu Feng,Qiang-Sheng Sun,Hua Lin,Xun Sun,Guo-Qiang Lin

Organic & Biomolecular Chemistry Pub Date : 10/27/2016 00:00:00 , DOI:10.1039/C6OB02157C

Abstract

A Michael–Mannich–hemiaminalization–dehydration cascade reaction was developed for the construction of spirooxindole benzoquinolizine derivatives. Additionally, spirooxindole benzoindolizidine was prepared conveniently through a ring-contracted rearrangement reaction from spirooxindole benzoquinolizine.