Abstract
Recent advances in synthetic method of heterocyclic compounds by aza-Wittig reaction, i.e., the imination using iminophosphoranes, are here reviewed. Examples are systematically presented depending on the direct cyclization route by intramolecular aza-Wittig reaction, or the sequential route via intermolecular aza-Wittig reaction, followed by various types of cyclizations such as electrocyclic reaction, Diels-Alder cycloaddition, and nucleophilic heterocyclization etc. The feasibility of this method in synthesis of nitrogen-heterocycles is emphasized in this review.
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