Abstract
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•Efficient synthesis of bicyclic and tricyclic heterocycles.•Utilized benzotriazole chemistry for the efficient synthesis.•High yield and mild reaction condition compared to literature methods.•Characterized and confirmed the compounds by 1D and 2D NMR studies.
Microwave-mediated one-step synthesis of several bi- and tricyclic heterocycles via the intermolecular cyclization of N-acylbisbenzotriazoles with ortho-phenylenediamine in good yield is reported.