One-Pot Synthesis of Benzo[4,5]imidazo[2,1-a]isoquinolines and Isoquinolino[3,4-b]quinoxalines via Tandem Cyclization Strategies
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American Chemical Society
Abstract
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. © 2016 American Chemical Society.
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Keywords
Benzimidazoles, Catalysis, Cyclization, Isoquinolines, Molecular structure, Quinoxalines, Chemistry, Organic compounds, Benzimidazole derivative, Benzo(4,5)imidazo(2,1-a)isoquinoline, Isoquinoline derivative, Isoquinolino(3,4-b)quinoxaline, Quinoxaline derivative, Functionalized, O-phenylenediamines, One-pot protocol, One-pot synthesis, Tandem cyclization, One pot synthesis, Chemical structure, Synthesis