Abstract
One-pot synthesis of 5,6-dihydroindolo[2,1-a]isoquinolines from gold-catalyzed annulations between N-(o-alkynylphenyl)imines and α-diazo esters is described. This cascade reaction involves an initial attack of the diazo ester at the imine to form cis-aziridine, followed by stereoselective [3 + 3]-annulations with the tethered arylalkyne. We have employed this new catalysis to prepare one bioactive 5,6-dihydroindolo[2,1-a]isoquinoline molecule.
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