Cobalt(III) Porphyrin Catalyzed Aza-Diels–Alder Reaction Ryota Wakabayashi Takuya Kurahashi Seijiro Matsubara 10.1021/ol3020946.s003 https://acs.figshare.com/articles/dataset/Cobalt_III_Porphyrin_Catalyzed_Aza_Diels_Alder_Reaction/2484808 An efficient protocol for the aza-Diels–Alder reaction of electron-deficient 1,3-dienes with unactivated imines in the presence of a cationic cobalt(III) porphyrin complex was developed. The transformation proceeded smoothly to afford the desired piperidine scaffold within 2 h at ambient temperature. Highly chemoselective cycloaddition of imines with dienes in the presence of a variety of carbonyl compounds was also demonstrated. 2012-09-21 00:00:00 unactivated imines presence ambient temperature cobalt diene variety Catalyzed cationic transformation Porphyrin 2 h piperidine scaffold porphyrin ReactionAn carbonyl compounds Cobalt chemoselective cycloaddition