METHOD FOR THE PRODUCTION OF 3-ISOPROPYL-IH-2, 1,3-BENZOTHIADIAZINE-4 (3H)-ONE-2,2-DIOXIDE

METHOD FOR THE PRODUCTION OF 3-ISOPROPYL-IH-2, 1,3-BENZOTHIADIAZINE-4 (3H)-ONE-2,2-DIOXIDE

A process for preparing 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide (I) or a salt of Iwhich comprises reacting anthranilic isopropylamide IIsimultaneously with sulfur trioxide or chlorosulfonic acid in the presence of an organic base or with adducts of sulfur trioxide and organic bas...

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Hauptverfasser: HANSPETER HANSEN, KURT BENZ, HANS RUPERT MERKLE, ERICH FRETSCHNER, ALBRECHT MUELLER, OTTO WOERZ
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Sprache:eng ; por
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CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator HANSPETER HANSEN
KURT BENZ
HANS RUPERT MERKLE
ERICH FRETSCHNER
ALBRECHT MUELLER
OTTO WOERZ
description A process for preparing 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide (I) or a salt of Iwhich comprises reacting anthranilic isopropylamide IIsimultaneously with sulfur trioxide or chlorosulfonic acid in the presence of an organic base or with adducts of sulfur trioxide and organic basesandphosphorus oxychloride at from 50° C. to the reflux temperature, followed, if appropriate, by conversion into its salts, is described.
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subjects CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
title METHOD FOR THE PRODUCTION OF 3-ISOPROPYL-IH-2, 1,3-BENZOTHIADIAZINE-4 (3H)-ONE-2,2-DIOXIDE
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