Herbicidal 3-isopropyl-benzo-2-thia -1,3-diazinone 2,2,-di:oxide mfr

3-Isopropyl-benzo-2-thia- 1,3-diazinone-(4)-2,2-dioxide (I) is prepd. by reacting N,N'-diisopropylurea with PCl3 and Cl2 in the presence of oleum and sulphuric acid, condensing the thus-obtained isopropyl sulphamoyl chloride with methyl anthranilate at room temp without a solvent but in the pre...

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Bibliographische Detailangaben
Hauptverfasser:	VECSEY ISTVAN K, LEGRADI LASZLO, FODOR FERENC, SOPTEI CSABA, KOLONICS ZOLTAN, PELYVA JENO, HORVATH ANDRAS, NAGY LAJOS, SEBOK DEZSO
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HUNTING METALLURGY ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
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Zusammenfassung:	3-Isopropyl-benzo-2-thia- 1,3-diazinone-(4)-2,2-dioxide (I) is prepd. by reacting N,N'-diisopropylurea with PCl3 and Cl2 in the presence of oleum and sulphuric acid, condensing the thus-obtained isopropyl sulphamoyl chloride with methyl anthranilate at room temp without a solvent but in the presence of excess N,N-diethylaniline cyclising the obtd. N-isopropyl-N' -o-carbomethoxyphenyl sulphamide in the presence of sodium methylate, extracting the obtd. crude (I) with aq. methanol, adding water to form a sediment of impurities, removing the sediment and isolating (I). 3-Isopropyl-benzo-2-thia- 1,3-diazinone-(4)-2,2-dioxide (I) is prepd. by reacting N,N'-diisopropylurea with PCl3 and Cl2 in the presence of oleum and sulphuric acid, condensing the thus-obtained isopropyl sulphamoyl chloride with methyl anthranilate at room temp without a solvent but in the presence of excess N,N-diethylaniline cyclising the obtd. N-isopropyl-N' -o-carbomethoxyphenyl sulphamide in the presence of sodium methylate, extracting the obtd. crude (I) with aq. methanol, adding water to form a sediment of impurities, removing the sediment and isolating (I). (Machine-translation by Google Translate, not legally binding) LA INVENCION SE REALIZA CON UN PROCEDIMIENTO DE PREPARACION DE 3-ISOPROPIL-BENZO-2-TIA-1, 3-DIAZINONA-(4)-2,2-DIOXIDO, QUE COMPRENDE LA PREPARACION DE CLORURO DE ISOPROPIL-SULFAMOILO EN UNA OPERACION MEDIANTE REACCION DE N,NK-DIISOPROPIL-UREA CON TRICLORURO DE FOSFORO Y CLORO EN PRESENCIA DE OLEO Y ACIDO SULFURICO Y LA CONDENSACION DEL CLORURO DE ISOPROPIL-SULFAMOILO ASI OBTENIDO A TEMPERATURA AMBIENTE, SIN NINGUN DISOLVENTE, EN PRESENCIA DE UN EXCESO DE N,N-DIETIL ANILINA CON ESTER METILICO DEL ACIDO ANTRANILICO, Y LA CICLACION DE N-ISOPROPIL-NK-O-CARBOMETOXI-FENIL-SULFAMIDA ASI OBTENIDA MEDIANTE LA ACCION DE METILADO SODICO; LA EXTRACCION DEL 3-ISOPROPIL-BENZO-2-TIA-1, 3-DIAZINONA-(4)-2, 2-DIOXIDO CRUDO OBTENIDO CON UNA MEZCLA DE METANOL Y AGUA Y TRAE LA ADICION DE AGUA A LA MEZCLA ACUOSA-METANOLICA Y LA SEDIMENTACION DE LOS CONTAMINANTES, EL AISLAMIENTO DE UN PRODUCTO DE ELEVADA PUREZA. EL PRODUCTO OBTENIDO ES UTILIZABLE COMO HERBICIDA ACTIVO POR CONTACTO.