N-Heterocyclic compounds are a paramount important class of biological and medicinal candidates [1]. These scaffolds are found to be having several applications in agrochemicals, pharmaceuticals, dyestuffs, and functional materials. They have a wide range of biological activities including antitubercular, anticancer, antipsychotic, antimicrobial, anti-HIV, and for the treatment of neurodegenerative diseases [2]. Marinoquinolines are a class of fused quinolines isolated from the marine bacteria having antibacterial and antifungal activities. Fused quinolines and benzoquinolines core units are found in various alkaloids and commercial drugs [3]. In this work, we wish to report a clean method for synthesis of benzoquinoline derivatives via reaction of aromatic amin, dimedone and aryl aldehyde under refluxing CH3CN using Co-phthalocyanine-SO3H (0.01 g) as an efficient nano-catalyst
