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Paper | Regular issue | Vol 26, No. 9, 1987, pp.2371-2379
Published online, 1st January, 1970
DOI: 10.3987/R-1987-09-2371
N-Halosuccinimide-sulfuric Acid: An Efficient Reagent for the Synthesis of Fused Benzothiazoles

Javier Garín, Carmen Guillén, Enrique Meléndez, Francisco L. Merchán, Jesús Orduna, and Tomás Tejero

*Department of Organic Chemistry, Instituto de Ciencias de Materiales de Aragón, University of Zaragoza, 50009-Zaragoza, Spain


A new version of Hugershoff’s synthesis is reported. The cyclizing agent, N-halosuccinimide/sulfuric acid permits the preparation of complex fused benzothiazoles in very good yields.