Process for preparing...

Details Process for preparing... Process for preparing...

C - Chemistry, Metallurgy

07

D

260/243.21

C07D 279/02 (2006.01)

Patent

CA 1069894

ABSTRACT OF THE DISCLOSURE A process for the synthesis of N-aryl-2-methyl-4- hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides by methylation of an alkali or alkaline earth metal salt of N-aryl- 4-hydxoxy-2H-1,2-benæothiazine-3-carboxamide 1,1-dioxides in a reaction-inert solvent at 0-100°C., said products being anti- inflammatory agents.

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