Yang, Xiu-Long Peng, Xie-Xue Chen, Fei Han, Bing TEMPO-Mediated Aza-Diels–Alder Reaction: Synthesis of Tetrahydropyridazines Using Ketohydrazones and Olefins A novel, facile, and efficient method for the synthesis of tetrahydropyridazines by a one-pot tandem reaction of easily accessible ketohydrazones and olefins in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) has been successfully developed. The reaction involves the initial generation of azoalkenes from direct oxidative dehydrogenation of ketohydrazones using TEMPO as the commercially available oxidant, followed by a subsequent aza-Diels–Alder reaction with olefins. oxidative dehydrogenation;olefins;ketohydrazone 2016-04-27
    https://acs.figshare.com/articles/dataset/TEMPO_Mediated_Aza_Diels_Alder_Reaction_Synthesis_of_Tetrahydropyridazines_Using_Ketohydrazones_and_Olefins/3204124
10.1021/acs.orglett.6b00702.s002