Synthesis, Table of Contents Synthesis 2013; 45(20): 2893-2903DOI: 10.1055/s-0033-1339490 paper © Georg Thieme Verlag Stuttgart · New York Copper- or Palladium-Catalyzed Amidation and Cyclization Route for the Synthesis of Pyrimido[4,5-b]carbazoles Arepalli Sateesh Kumar School of Chemistry, University of Hyderabad, Hyderabad 500046, India Fax: +91(40)23012460 Email: rnsc@uohyd.ernet.in , Rajagopal Nagarajan* School of Chemistry, University of Hyderabad, Hyderabad 500046, India Fax: +91(40)23012460 Email: rnsc@uohyd.ernet.in › Author Affiliations Recommend Article Abstract Buy Article All articles of this category Abstract Pyrimido[4,5-b]carbazole derivatives were synthesized by a copper- or palladium-catalyzed sequential amidation and cyclization process in which a C–N bond formed at the 2-position of a 3-formylcarbazole afforded a new 9-substituted N-(3-formyl-9H-carbazol-2-yl)amide. 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