DE1670797A1 - Benzisothiazole-1,1-dioxyde and process for their preparation - Google Patents

Benzisothiazole-1,1-dioxyde and process for their preparation

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Publication number
DE1670797A1
DE1670797A1 DE19671670797 DE1670797A DE1670797A1 DE 1670797 A1 DE1670797 A1 DE 1670797A1 DE 19671670797 DE19671670797 DE 19671670797 DE 1670797 A DE1670797 A DE 1670797A DE 1670797 A1 DE1670797 A1 DE 1670797A1
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DE
Germany
Prior art keywords
benzisothiazole
general formula
acid ester
substituted
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19671670797
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German (de)
Inventor
Herbert Dr Bestian
Helmut Dr Mueller
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Hoechst AG
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Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of DE1670797A1 publication Critical patent/DE1670797A1/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D275/00Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings
    • C07D275/04Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems
    • C07D275/06Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems with hetero atoms directly attached to the ring sulfur atom

Description

Henzisothiazol-l, l-dioxyde und Verfahren zu ihrer Herstellung Aus der deutschen Patentschrift l l44 7l8 ist bekannt, daß sich N, N-disubstituierte N'-Iialogensulfonyl-amidine aus disubstituierten Carbonsäureamiden und N-Carbonylsulfamidsäurechlorid bei relativ tiefen Temperaturen herstellen lassen.Henzisothiazole-l, l-dioxyde and process for their preparation From German Patent 11447118 discloses that N, N-disubstituted ones N'-dialogensulfonyl-amidines from disubstituted carboxamides and N-carbonylsulfamic acid chloride can be produced at relatively low temperatures.

Überraschenderweise wurde nun gefunden, da# man neue Benzisothiazol-1, 1-dioxyde der allgemeinen Formel I worin R1, R2 und R3 Alkyl- und Cycloalkylreste bedeuten, die gegebenenfalls durch Halogen, Alkoxy-, Aryloxy-, Cyan-, Dialkylatnino-, Carbonsäureester-, Sulfonsäureester-, Alkylsulfonyl-oder Arylsulfonylgruppen substituiert sein können, wobei R3 zusätzlich für Wasserstoff stehen kann und zwei R3 außerdem die Bedeutung eines ankondensierten Aromaten haben können, erhält, wenn man aromatische N, N-substituierte Carbonsäureamide der allgemeinen Formel II worin R1, R2 und R3 die vorstehend angegebenen Bedeutungen haben, bei erhöhter Temperatur mit N-Carbonylsulfamidsäurechlorid umsetzt.Surprisingly, it has now been found that new benzisothiazole-1,1-dioxides of the general formula I can be found wherein R1, R2 and R3 denote alkyl and cycloalkyl radicals, which can optionally be substituted by halogen, alkoxy, aryloxy, cyano, dialkylatnino, carboxylic acid ester, sulfonic acid ester, alkylsulfonyl or arylsulfonyl groups, where R3 can also be hydrogen and two R3 can also have the meaning of a fused aromatic compound, obtained when aromatic N, N-substituted carboxamides of the general formula II in which R1, R2 and R3 have the meanings given above, reacted with N-carbonylsulfamic acid chloride at an elevated temperature.

Die Reaktionsbedingungen können in weiten Grenzen variiert werden. Man arbeitet bei Temperaturen zwischen etwa 80 und etwa 250 C-vorteilhaft zwischen etwa 130 und etwa 180 C-indem man die Reaktionskomponenten unverdünnt oder unter Verwendung inerter Lösungs-oder Verdünnungsmittel aufeinander einwirken läßt. Das Verfahren kann mit Vorteil auch zweistufig durchgeführt werden, indem man das Carbonsäureamid in einem niedrigsiedenden inerten Lösungsmittel auf das N-Carbonylsulfamidsäurechlorid bei Raumtemperatur einwirken läßt und die so erhaltene Lösung des N-substituierten N'-Chlorsulfonyl-amidins in ein z. B. auf 170 C erhitztes hochsiedendes inertes Lösungsmittel fließen läßt. Die Verfahrensprodukte fallen kristallin und meist sehr rein an. Man arbeitet im allgemeinen in äquimolaren blengen, jedoch kann auch die eine oder die andere Komponente im Uberschuß angewendet werden. Für die Herstellung der N-substituierten'-Chlorsulfonyl-amidine in der ersten Reaktionsstufe eignen sich als niedrigsiedende inerte Lösungsmittel Aether, wie Diäthyläther und Tetrahydrofuran, aliphatische und aromatische Kohlenwasserstoffe wie Hexan und Benzol, chlorierte Kohlenwasserstoffe, wie Chloroform und Tetrachlorkohlenstoff orzugsweise jedoch Methylenchlorid. Als Reaktionsmedium für die zweite Stufe des Verfahrens eignen sich hochsiedende inerte Lösungsmittel, wie Dekahydronaphthalin und Chlorbenzol, vorzugsweise aber o-Dichlorbenzcl.The reaction conditions can be varied within wide limits. One works at temperatures between about 80 and about 250 C-advantageously between about 130 and about 180 C-by taking the reaction components undiluted or under Use inert solvents or diluents to act on one another. That The process can also be carried out in two stages by using the carboxamide in a low-boiling inert solvent on the N-carbonylsulfamic acid chloride allowed to act at room temperature and the resulting solution of the N-substituted N'-chlorosulfonyl-amidines in a z. B. high-boiling inert heated to 170 C. Lets solvent flow. The products of the process are crystalline and mostly very pure on. In general, equimolar diameters are used, but the one or the other component can be used in excess. For the production the N-substituted'-chlorosulfonyl-amidines are suitable in the first reaction stage as low-boiling inert solvents, ethers, such as diethyl ether and tetrahydrofuran, aliphatic and aromatic hydrocarbons such as hexane and benzene, chlorinated However, hydrocarbons such as chloroform and carbon tetrachloride are preferred Methylene chloride. As a reaction medium for the second stage of the process high-boiling inert solvents such as decahydronaphthalene and chlorobenzene are suitable, but preferably o-dichlorobenzene.

Die neuen Verfahrenserzeugnisse stellen wertvolle Zwischenprodukte für die Herstellung von Farbstoffen und Scheidlingsbekämpfungsmitteln dar. Die Produkte können durch alkalische Verseifung quantitativ in Saccharinderivate übergeführt werden.The new process products represent valuable intermediate products for the production of dyes and pesticides. The products can be converted quantitatively into saccharin derivatives by alkaline saponification will.

Beispiel 1 : 3-Dimethylamino-benzisothiazol-1, 1-dioxyd Die Mischung von l49 g N, N-Dimethyl-benzamid und l4lg N-Carbonylsulfamidsäurechlorid wird 5 Stunden unter Rückfluß erhitzt, wobei die Temperatur von 110 auf 150 C steigt.Example 1: 3-Dimethylamino-benzisothiazole-1,1-dioxide The mixture of 149 g of N, N-dimethylbenzamide and 14lg of N-carbonylsulfamic acid chloride becomes 5 Heated under reflux for hours, the temperature rising from 110 to 150.degree.

Der Reaktionskolbeninhalt wircl aus Dimethylformamid umkristallisiert. Man erhält farblose Nadeln vom Schmelzpunkt 299°C, Ausbeute 84 g (40 %).The contents of the reaction flask are recrystallized from dimethylformamide. Colorless needles with a melting point of 299 ° C. are obtained, yield 84 g (40%).

Analyse : ber. : C 51, 4 H 4, 7 N 13, 3 S 15, 2 % gef. : 51, 4,7 13,3 15,2 % Beispiel 2 : 3-Dimethylamino-6-methyl-benzisothiazol-1, 1-dioxyd Zu der Lösung von 163 g p-Methyl-benzoesäuredimethylamid in 500 ml Methylenchlorid laßt man im Yerlauf von einer Stunde 241 g N-Carbonyl-sulfamidsäurechlorid in 50 ml Methylenchlorid unter Rühren bei 25°C tropfen. Das sich entwickelnde Kohlendioxyd wird durch eine an die Apparatur angeschlossene Gasuhr gemessen. Die so erhaltene Lösung lä#t man unter starkem Rühren in 50 ml o-Dichlorbenzol tropfen, das man auf 170°C hält. Der entstehende Chlorwasserstoff entweicht zusammen mit dem verdampfenden Methylenchlorid, das kondensiert wird. Die Zutropfdauer beträgt 4 Stunden. Unter Rühren läßt man erkalten und saugt dann den Kristallbrei ab. Man erhält 147 g (70 %) des Produktes vom Schmelzpunkt 256°C.Analysis: Calculated: C 51, 4 H 4, 7 N 13, 3 S 15, 2% found. : 51, 4.7 13.3 15.2% Example 2: 3-Dimethylamino-6-methyl-benzisothiazole-1,1-dioxide To the solution of 163 g of p-methylbenzoic acid dimethylamide in 500 ml of methylene chloride is left in Over the course of one hour, 241 g of N-carbonyl sulfamic acid chloride in 50 ml of methylene chloride drop with stirring at 25 ° C. The evolving carbon dioxide is released by a Gas meter connected to the apparatus measured. The solution obtained in this way is allowed to run Drop into 50 ml of o-dichlorobenzene, which is kept at 170 ° C., with vigorous stirring. Of the the resulting hydrogen chloride escapes together with the evaporating methylene chloride, that is condensed. The dropping time is 4 hours. The mixture is left with stirring cool and then suck off the crystal pulp. 147 g (70%) of the product are obtained with a melting point of 256 ° C.

Analyse : ber. : C 53, 6 H 5, 4 N 12, 4 S 14, 3% gef. : 53, 6 5, 4 12, 4 14, 3 % Entsprechend cler im Beispiel 2 angegebenen Vorschrift wurden folgende Verbindungen hergestellt : Nr. Schmelzpunkt Ausbeute 1 3-Dimethylamino-5-methyl- 295°C 70 % benzisothiazol-l, 1-dioxyd 2 3-Dimethylamino-7-methyl- 232°C 70 % benzisothiazol-1, 1-dioxyd 3 3-Dimethylamino-6-chlor- 305° 30 % benzisothiazol-l, 1-dioxyd 4 3-Dimethylamino-6-methoxy-254C 20 % benzisothiazol-l, l-dioxyd 5 3'-Dimethylamino-naphth [2, 1-cd] 295°C 80 % isothiazol-l', l'-dioxyd 6 3'-Dimethylamino-napth cri, 2-d]- 215° 80 isothiazol-1', 1'-dioxyd Analysis: Calculated: C 53, 6 H 5, 4 N 12, 4 S 14, 3% found. : 53, 6 5, 4 12, 4 14, 3% According to the procedure given in Example 2, the following compounds were prepared: No melting point yield 1 3-dimethylamino-5-methyl- 295 ° C 70% benzisothiazole-1,1-dioxide 2 3-dimethylamino-7-methyl- 232 ° C 70% benzisothiazole-1,1-dioxide 3 3-dimethylamino-6-chloro-305 ° 30% benzisothiazole-1,1-dioxide 4 3-dimethylamino-6-methoxy-254C 20% benzisothiazole-l, l-dioxide 5 3'-Dimethylamino-naphth [2.1-cd] 295 ° C 80% isothiazole-l ', l'-dioxide 6 3'-dimethylamino-napth cri, 2-d] - 215 ° 80 isothiazole-1 ', 1'-dioxide

Claims (2)

Patentansprüche : 1. Benzisothiazol.-1, 1-dioxy (le der allgemeinen Formel (I) worin R1, R2 und R3 Alkyl- und Cycloalkylreste bedeuten, die gegebenenfalls durch Halogen, Alkoxy-, Aryloxy-, Cyan-, Dialkylamino-, Carbonsatireester-, Sulfonsäureester-, Alkylsulfonyl-oder Arylsulfonylgruppen substituiert sein können, wol) ei R3 zusätzlich für Wasserstoff stehen kann und zwei R3 au#erdem die Bedeutung eines ankondensierten Aromaten haben können.Claims: 1. Benzisothiazol.-1, 1-dioxy (le of the general formula (I) where R1, R2 and R3 denote alkyl and cycloalkyl radicals which may optionally be substituted by halogen, alkoxy, aryloxy, cyano, dialkylamino, carboxylate ester, sulfonic acid ester, alkylsulfonyl or arylsulfonyl groups, wol) ei R3 additionally for hydrogen can stand and two R3 can also have the meaning of a condensed aromatic. 2. Verfahren zur Herstellung von neuen Benzisothiazol-1, 1-dioxyden der allg emeinen Formel I worin R1, R2 und R3 alkyl- und Cycloalkylreste bedeuten, die gegebenenfalls durch Halogen, Alkoxy-, Aryloxy-, Cyan-, Dialkylamino-, Carbonsäureester-, Sulfonsaureester, Alkylsuflonyl- oder Arylsulfonylgruppen substituiert sein können, wobei R3 zusatzlich für Wasserstoff stehen kann und zwei R3 außerdem die Dedeutung eines ankondensierten Aromaten haben können, dadurch gekennzeichnet, daß man aromatische N, Carbonsäureamide der allgemeinen Formel II worin R1, R2 und R3 die vorstehend angegebenen Bedeutungen haben, bei erhöhter Temperatur mit N-Carbonylsulfamidsäurechlorid umsetzt.2. Process for the preparation of new benzisothiazole-1, 1-dioxyden of the general formula I. wherein R1, R2 and R3 denote alkyl and cycloalkyl radicals, which may optionally be substituted by halogen, alkoxy, aryloxy, cyano, dialkylamino, carboxylic acid ester, sulfonic acid ester, alkylsuflonyl or arylsulfonyl groups, where R3 can also be hydrogen and two R3 can also have the meaning of a condensed aromatic, characterized in that one aromatic N, Carboxamides of the general formula II in which R1, R2 and R3 have the meanings given above, reacted with N-carbonylsulfamic acid chloride at an elevated temperature.
DE19671670797 1967-02-10 1967-02-10 Benzisothiazole-1,1-dioxyde and process for their preparation Pending DE1670797A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416226A1 (en) * 1978-02-03 1979-08-31 Squibb & Sons Inc BENZISOTHIAZOLE-1,1-DIOXIDES AND THEIR THERAPEUTIC USE
EP0086748A1 (en) * 1982-02-12 1983-08-24 Ciba-Geigy Ag 3-Amidine-benzisothiazole-1,1 dioxides, process for their preparation and their use as pesticides
EP0033984B1 (en) * 1980-01-23 1984-06-06 Duphar International Research B.V New sulphonyl compounds, method of preparing the new compounds, as well as aphicidal compositions on the basis of the new compounds
WO2009141305A1 (en) * 2008-05-22 2009-11-26 Syngenta Participations Ag 3-amino-benzo [d] isothiazole dioxide derivatives and their use as pesticides

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416226A1 (en) * 1978-02-03 1979-08-31 Squibb & Sons Inc BENZISOTHIAZOLE-1,1-DIOXIDES AND THEIR THERAPEUTIC USE
EP0033984B1 (en) * 1980-01-23 1984-06-06 Duphar International Research B.V New sulphonyl compounds, method of preparing the new compounds, as well as aphicidal compositions on the basis of the new compounds
EP0086748A1 (en) * 1982-02-12 1983-08-24 Ciba-Geigy Ag 3-Amidine-benzisothiazole-1,1 dioxides, process for their preparation and their use as pesticides
WO2009141305A1 (en) * 2008-05-22 2009-11-26 Syngenta Participations Ag 3-amino-benzo [d] isothiazole dioxide derivatives and their use as pesticides
CN102036973A (en) * 2008-05-22 2011-04-27 先正达参股股份有限公司 3-amino-benzo [D] isothiazole dioxide derivatives and their use as pesticides

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