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Selective introduction of substituents on 3-substituted-2,3-dihydro-1,4-dioxino[2,3-b]pyridine at the pyridine ring was achieved using electrophilic aromatic substitution and addition-elimination reactions. In all the examples, functionalization at the 3-position was maintained. For this reason, the products disclosed in this paper could be useful as potential scaffolds for drug discovery and combinatorial...
New synthesis approaches that have led to a series of novel aza analogues of the 2-substituted-2,3-dihydro-1,4-benzodioxin core, bearing versatile bromomethyl group on the non aromatic oxygenated ring, are described. According to their structures these novel scaffolds can be useful intermediates for the preparation of potential new therapeutic agents.
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