Abstract

One-pot synthesis of cyclopentane-fused 5'-aryl-4- cycloalkylamino-2,2'-bipyridines based on the neat (200 °C) reaction of 3-(4-bromopyridin-2-yl)-1,2,4-triazines with enamines is reported. In the course of the transformation, consecutive aza-Diels–Alder reaction and nucleophilic substitution of bromine atom under the action of the liberating amine occur. The possibility of the solvent- and catalyst-free replacement of 4-positioned bromine atom in 2,2'-bipyridines by amino moieties was demonstrated.

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