80201-73-6Relevant articles and documents
THE SYNTHESIS OF SUBSTITUTED 2H-1,2-BENZOTHIAZINES 1,1-DIOXIDES
Svoboda, Jiri,Palecek, Jaroslav,Dedek, Vaclav
, p. 1133 - 1139 (2007/10/02)
The base-catalyzed rearrangement of the esters of 2H-1,2-benzothiazolin-3-one-2-acetate 1,1-dioxide (IIa-IIc) afforded substituted 2H-1,2-benzothiazine-3-carboxylate 1,1-dioxides IIIa-IIIc.After N-alkylation and aminolysis the antiinflammatory drugs piroxicam and isoxicam were obtained.