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- Sasiambarrena, Leandro D.; Cánepa, Alicia S.; Bravo, Rodolfo D.
- Tetrahedron letters 2015 v.56 no.52 pp. 7184-7189
- regioselectivity, etc ; catalysts; chemical reactions; chemical structure; organic compounds; Show all 5 Subjects
- ... We describe herein an efficient synthetic method for novel dihydronaphthothiazines S,S-dioxides by aromatic intramolecular sulfonylamidomethylation of 2-naphthylmethanesulfonamides with s-trioxane using Amberlyst XN-1010 as acid heterogeneous catalyst. Cyclization of the formed sulfonyliminium ion occurred with high regioselectivity and in excellent yields. ...