A New, Facile Synthesis of 4-Alkyl- and Aryl-Substituted 3-Amino-4<i>H</i>-1,2,4-benzothiadiazine 1,1-Dioxides
作者:A. V. Narender Reddy、Ahmed Kamal、P. B. Sattur
DOI:10.1055/s-1986-31810
日期:——
A new efficient preparation of 4-alkyl- and aryl-substituted 3-amino- 4H-1,2,4-benzothiadiazine 1,1-dioxides (3) is described via the 3-chloro derivatives of 4-alkyl- and aryl substituted 3-oxo-2H-3,4-dihydro-1,2,4-benzothiadiazine 1,1-dioxides, (1) on their treatment with aqueous ammonia solution.