Pd-catalyzed 5-exo-dig cyclization/etherification cascade of N-propargyl arylamines for the synthesis of polysubstituted furans

A palladium-catalyzed cyclization/etherification cascade of N -propargyl arylamines containing a 1,3-dicarbonyl side chain is described for the synthesis of polysubstituted furans bearing indoline skeletons under mild conditions.