Synthesis, Table of Contents Synthesis DOI: 10.1055/a-2499-2559 feature Nickel-Catalyzed Regioselective Access to Dibenzo[c,f][1,2]thiazepine 5,5-Dioxides and Dibenzo[b,e]azepines Uma Sankar Mandal , Sk. Shamim Ahamed , Tapas Ghosh∗ Recommend Article Abstract Buy Article All articles of this category Abstract An effective technique that yields dibenzo[c,f][1,2]thiazepine 5,5-dioxide and dibenzo[b,e]azepine derivatives through nickel-catalyzed regioselective intramolecular acetylene hydroarylation is reported. The developed method proceeds without the need for any additional external ligand. This protocol tolerates different functional groups and furnishes the desired products regioselectively in good to excellent yields. Key words Key wordsnickel catalysis - azepines - sultams - regioselectivity - acetylene hydroarylation Full Text References References 1a Drews J. Science 2000; 287: 1960 1b Scozzafava A, Owa T, Mastrolorenzo A, Supuran CT. Curr. Med. 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