P. Catsoulacos
Dec 1, 1971
Citations
0
Influential Citations
15
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Substituted 1,2-benzothiazin-3-ones have been prepared by cyclization of 4,5-dimethoxy-2-carboethoxymethybenzenesulfonamides. The latter were obtained by the action of ammonia and primary and secondary amines on 4,5-dimethoxy-2-carboethoxymethylbenzenesulfonyl chloride which in turn was obtained from ethyl 3,4-dimethoxyphenylacetate and chlorosulfonic acid.