A process for the synthesis of N-aryl-3,4-dihydro-2-alkyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides by treatment of N-aryl-N'-alkyl-N'-(2'-alkoxycarbonylbenzenesulfonyl)glycineamides, useful intermediates for said process, with an alkali or alkaline earth metal hydride in a reaction-inert solvent at 50.degree.-150.degree.C., said products being antiinflammatory agents.
一种合成N-芳基-3,4-二氢-2-烷基-4-酮基-2H-1,2-苯并
噻嗪-3-羧酰胺-1,1-二氧化物的方法,通过将N-芳基-N'-烷基-N'-(2'-烷氧羰基苯磺酰)甘
氨酰胺(该方法中有用的中间体)与碱
金属或碱土
金属
氢化物在反应惰性溶剂中在50度至150度之间处理而得,所述产物是抗炎药。