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One-Pot Synthesis of Benzo[4,5]imidazo[2,1‑a]isoquinolines and Isoquinolino[3,4‑b]quinoxalines via Tandem Cyclization Strategies


Two operationally simple one-pot protocols have been developed for the synthesis of amino-functionalized benzo[4,5]imidazo[2,1-a]isoquinolines and isoquinolino[3,4-b]quinoxalines. Optimization data and substrate scope for these atom-economical transformations, which engage commercially available o-phenylenediamines and o-cyanobenzaldehydes, are discussed.

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