Fig. 5: Additional supporting mechanistic experiments.
From: Carbene-catalyzed chemoselective reaction of unsymmetric enedials for access to Furo[2,3-b]pyrroles
a Model reaction of 1a(D). b Intensity of Breslow intermediates via LC-HRMS. c Intensity of acyl azolium intermediates via LC-HRMS. d DFT calculation for the oxidation process. e Possible polymerized product analyzed by HRMS.
