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Abstract
AbstractPost‐Ugi modifications offer a great tool to construct functionalized heterocycles in an atom‐economic manner. Using this approach, we have constructed highly functionalized azaspiro tricyclic scaffolds that involve Ugi condensation and ipso‐cyclization followed by aza‐Michael ring closures. Herein, we present a detailed account of aza‐Michael cyclizations with respect to substrate scope and limitations, along with new methods to prepare novel azaspiro tricyclic scaffolds.
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