Benzothiazines in synthesis. Eight-membered ring formation in an intramolecular Friedel-Crafts reaction |
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Authors: | Michael Harmata Weijiang Ying Charles L. Barnes |
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Affiliation: | Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA |
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Abstract: | Treatment of certain benzothiazines bearing allylic bromides side chains with indium tribromide resulted in the formation of eight-membered rings in addition to the expected six-membered rings. |
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