Synfacts, Table of Contents Synfacts 2015; 11(5): 0472DOI: 10.1055/s-0034-1380606 Synthesis of Heterocycles © Georg Thieme Verlag Stuttgart · New York1,4-Benzothiazines by Copper-Catalyzed Ring Expansion of BenzothiazolesContributor(s): Victor Snieckus , M. Selim Hossain (Snieckus Innovations)Recommend Article Abstract Buy ArticleKey words Key wordsbenzothiazines - copper catalysis - aminobenzothiazoles - carboxylic acids - ring expansion Full Text