Abstract:2‐Amino‐5‐nitrobenzolsulfonamide 1–4 werden zu entspr. Diaminen 12–15 reduziert und anschließend durch Diazotierung und Hypophosphit‐Behandlung in 5‐unsubstituierte Derivate 16–19 überführt. ‐ Hg(II)‐EDTA‐Dehydrierung von 16–18 liefert tricyclische Benzothiadiazine 22–24, die der Pipecoline 15/19 die Sulfonylaminale 20/21.
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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A new method is proposed for obtaining 3,4-polymethylene-1,2,4-benzothiadiazine 1,1-dioxides by reacting o-halobenzenesulfonamides with lactim ethers. Attempts were undertaken to synthesize quaternary salts of the heterocycles obtained.
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