CH507220A - Sulphamylanthranilic acids prepared from nitrobenzoic - Google Patents
Sulphamylanthranilic acids prepared from nitrobenzoicInfo
- Publication number
- CH507220A CH507220A CH957668A CH957668A CH507220A CH 507220 A CH507220 A CH 507220A CH 957668 A CH957668 A CH 957668A CH 957668 A CH957668 A CH 957668A CH 507220 A CH507220 A CH 507220A
- Authority
- CH
- Switzerland
- Prior art keywords
- formula
- acid
- sulfamyl
- chloro
- sulphamylanthranilic
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/14—Radicals substituted by singly bound hetero atoms other than halogen
- C07D333/20—Radicals substituted by singly bound hetero atoms other than halogen by nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/30—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/37—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/52—Radicals substituted by nitrogen atoms not forming part of a nitro radical
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Prepn. of sulphamylanthranilic acids of formula (I) by the method given under 'PREPARATION'. - Hal = Cl, Br - R = benzyl, thienyl, furfuryl - (I) are diuretic and saluretic agents. - A mixt. of 3-sulphamyl-4-chloro-6-nitrobenzoic acid (10 g) and benzylamine (40 ml) is stirred at 100-110 deg. for 1 hr. and the hot mixt. poured into 2N-HCl (400 ml). The recovered product is dried, powdered, extd. several times with CH2Cl2 and then purified by charcoal treatment in aq. NaHCO3 soln. to yield 3-sulphamyl-4-chloro-6-benzylaminobenzoic acid (65%). m.p. 240 deg.
Description
Verfahren zur Herstellung von Sulfamyl-anthranilsäuren Gegenstand des Hauptpatentes ist ein Verfahren zur Herstellung von Sulfamyl-anthranilsäuren der For mel
EMI0001.0002
worin: Hal :ein Chlor- oder Bromatom und R den Benzyl- oder Furfurylrest bedeutet, das dadurch ge- kennzeichnet ist, dass man Verbindungen der Formel
EMI0001.0009
worin.
R1 eine Hydroxygruppe, deren Wasserstoffatom auch :durch ein Alkalimetall ersetzt sein kann, einen Alkoxy- oder Aralkoxyrest mit bis zu 18 Kohlenstoff atomen, ein Chlor- oder Bromatom -oder eine substi- tuerte Amino- oder Hydrazinogruppe bedeutet, mit Benzylamin oder Furfurylamin in Gegenwart eines or ganischen Lösungsmittels umsetzt und die erhaltene Verbindung gegebenenfalls anschliessend alkalisch ver- seift.
Es wurde nun gefunden, dass man nach dem Ver fahren des Hauptpatentes auch zu Sulfamyl-anthranil- säuren der Formel I, ;bei denen R den Benzyl-, Fur- furyl- oder Thenylrest bedeutet, ;
gelangt, wenn man von Verbindungen der Formel
EMI0001.0027
worin R1 eine unsubstituierte Amino- oder Hydrazino- Gruppe bedeutet, ausgeht und diese mit Benzylamin, Furfurylamin oder 2-Thenylamin (= 2-[Aminomethyl]- thiophen) in Gegenwart eines organischen Lösungsmit tels umsetzt und die erhaltene Verbindung gegebenen falls anschliessend alkalisch verseift und erhaltene Salze in die Säure überführt.
Die als Ausgangsstoffe der Formel II zu verwenden den unsubstituierten 3-Sulfamyl-4-halogen-6-nitro- benzoesäureamide bzw. -hydrazide können durch Umsetzung der entsprechenden Säure- ahloride mit Ammoniak bzw. Hydrazin unter milden Bedingungen hergestellt werden. Man :kann dabei :so.
vorgehen, dass man das Säurechlorid mit einem Ver dünnungsmittel versetzt und bei Zimmertemperatur unter schonenden Bedingungen Ammoniak !bis zur Sät tigung einleitet bzw. Hydrazin ,zugibt.
Die so :erhaltenen Ausgangsstoffe der Formel II werden dann in der im Hauptpatent beschriebenen Weise zu Sulfamyl-anthranilsäuren der Formel I um gesetzt.
Die Verfahrensbedingungen entsprechen in allen Einzelheiten den Bedingungen für das Verfahren des Hauptpatentes. Dies gilt für die Verwendbarkeit der ,als Ausgangsstoffe eingesetzten Sulfamyl-benzoesäuren bzw. ihre Derivate, für die Reaktionstemperaturen,
die Reaktionsdauer und .die Wahl der Lösungsmittel. Vor teilhaft ist bei der Verwendung von Thenylamin als Umsetzungskomponente das Arbeiten in inerten U- sungsmitteln, wie sie im Hauptpatent angegeben sind, da Iman bei dieser Arbeitsweise praktisch mit stöchio- metrischen Mengen es Amins auskommt.
Auch die sonstigen, im Hauptpatent enthaltenen Ausführungen über Durchführung des erfindungsge- mässen Verfahrens und seine vorteilhafte Verwendbar keit gelten in -gleichem Masse für ,
das Verfahren des vorliegenden Zusatzpatentes. Die Verfahrensprodukte sind wertvolle Diuretika und Saluretika und können daher in der Therapie Ver wendung finden.
Das nachfolgende Beispiel dient zur Erläuterung nies erfindungsgemässen Verfahrens.
<I>Beispiel</I> 3-Sulfamyl-4-chlor-6-benzylamino-benzoesäure In eine Lösung von 10 g 3-Sulfamyl-4-chlor-6- nitrobenzoesäurechlorid in 200 ml Dioxan wird bei Zimmertemperatur gasförmiges Ammoniak bis zur Sät tigung eingeleitet.
Anschliessend wird abgesaugt und das Filtrat im Vakuum zur Trockne eingedampft. Der er haltene Rückstand wird mit der abgesaugten Ausfäl lung vereinigt, zur Entfernung des Ammonchlorides mit viel Wasser gewaschen, abgesaugt und über Phosphor- pentoxyd getrocknet. Man erhält 9,6 g 3-Sulfamyl-4- chlor-6-nitro-benzoesäureamid, welches nach Umkri stallisieren aus Dimethylformamid/Wasser bei 275 schmilzt.
5 g dieses Amides werden mit 25 ml Benzylamin 1 Stunde bei 110 gerührt. Anschliessend wird in Eis wasser gegossen und mit 10 %iger Salzsäure auf pH 2 eingestellt. Die erhaltene harzige Masse wird mehr- mals mit Wasser dekantiert und anschliessend in Alkohol gelöst und unter Zusatz von Wasser zur Kristallisation gebracht.
Man erhält 4,5 g 3-Sulfamyl-4-chlor-6-benzyl- amino-benzoesäureamid vom Schmelzpunkt 225 .
4 g des vorher erhaltenen Amides werden in einer 40 % igen alkoholisch-wässrigen Natronlauge 2 Stunden auf ,dem Dampfbad erhitzt. Dann wird mit Wasser verdünnt und mit 10 % iger Salzsäure auf pH 2 einge stellt. Hierbei kristallisiert die 3-Sulfamyl-4-chlor-6- benzylamino-benzoesäure aus. Man erhält 3 g vom Schmelzpunkt 242 C.
In analoger Waise, bei Verwendung von Furfuryl- amin anstelle von Benzylamin, kann die 3-Sulfamyl- 4-chlor-6-furfurylaminobenzoesäure sowie die ent sprechende 6-Thenylaminobenzoesäure erhalten werden.
Process for the preparation of sulfamyl-anthranilic acids The main patent relates to a process for the preparation of sulfamyl-anthranilic acids of the formula
EMI0001.0002
in which: Hal: a chlorine or bromine atom and R denotes the benzyl or furfuryl radical, which is characterized in that compounds of the formula
EMI0001.0009
wherein.
R1 is a hydroxyl group, the hydrogen atom of which can also be replaced by an alkali metal, an alkoxy or aralkoxy group with up to 18 carbon atoms, a chlorine or bromine atom or a substituted amino or hydrazino group, with benzylamine or furfurylamine in the presence an organic solvent is reacted and the compound obtained is then optionally saponified under alkaline conditions.
It has now been found that the method of the main patent also leads to sulfamyl-anthranilic acids of the formula I, in which R denotes the benzyl, furfuryl or thenyl radical,;
when one of compounds of the formula
EMI0001.0027
where R1 is an unsubstituted amino or hydrazino group, and this with benzylamine, furfurylamine or 2-thenylamine (= 2- [aminomethyl] thiophene) is reacted in the presence of an organic solvent and the resulting compound, if appropriate, then saponified and alkaline salts obtained converted into the acid.
The unsubstituted 3-sulfamyl-4-halogen-6-nitrobenzoic acid amides or hydrazides to be used as starting materials of the formula II can be prepared by reacting the corresponding acid ahlorides with ammonia or hydrazine under mild conditions. You: can: so.
The procedure is to add a diluent to the acid chloride and, at room temperature, under gentle conditions, to introduce ammonia! until saturation or to add hydrazine.
The thus obtained starting materials of the formula II are then set to sulfamyl-anthranilic acids of the formula I in the manner described in the main patent.
The process conditions correspond in every detail to the conditions for the process of the main patent. This applies to the usability of the sulfamylbenzoic acids or their derivatives used as starting materials, for the reaction temperatures,
the reaction time and .the choice of solvents. When using thenylamine as a reaction component, it is advantageous to work in inert solvents, such as those specified in the main patent, since Iman manages in practice with stoichiometric amounts of amine.
The other statements contained in the main patent about the implementation of the method according to the invention and its advantageous usability apply equally to
the method of the present additional patent. The products of the process are valuable diuretics and saluretics and can therefore be used in therapy.
The following example serves to explain the process according to the invention.
<I> Example </I> 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid In a solution of 10 g of 3-sulfamyl-4-chloro-6-nitrobenzoic acid chloride in 200 ml of dioxane, gaseous ammonia is saturated at room temperature initiation.
It is then filtered off with suction and the filtrate is evaporated to dryness in vacuo. The residue obtained is combined with the precipitate which has been filtered off with suction, washed with plenty of water to remove the ammonium chloride, filtered off with suction and dried over phosphorus pentoxide. 9.6 g of 3-sulfamyl-4-chloro-6-nitro-benzoic acid amide are obtained, which after recrystallization from dimethylformamide / water melts at 275.
5 g of this amide are stirred at 110 for 1 hour with 25 ml of benzylamine. Then water is poured into ice and adjusted to pH 2 with 10% hydrochloric acid. The resinous mass obtained is decanted several times with water and then dissolved in alcohol and crystallized with the addition of water.
4.5 g of 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid amide with a melting point of 225 are obtained.
4 g of the previously obtained amide are heated in a 40% alcoholic-aqueous sodium hydroxide solution for 2 hours on the steam bath. It is then diluted with water and adjusted to pH 2 with 10% hydrochloric acid. The 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid crystallizes out. 3 g with a melting point of 242 ° C. are obtained.
In an analogous way, when using furfurylamine instead of benzylamine, 3-sulfamyl-4-chloro-6-furfurylaminobenzoic acid and the corresponding 6-thenylaminobenzoic acid can be obtained.
Claims (1)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH957668A CH507220A (en) | 1968-03-08 | 1968-06-27 | Sulphamylanthranilic acids prepared from nitrobenzoic |
AT06308/68A AT289063B (en) | 1968-03-08 | 1968-07-01 | PROCESS FOR THE MANUFACTURING OF SULPHAMYLANTHRANILE ACIDS |
SE978368A SE333379B (en) | 1968-03-08 | 1968-07-17 | |
DK284268A DK121865B (en) | 1968-03-08 | 1968-07-23 | Process for the preparation of sulfamylanthranilic acids. |
NL6811978A NL6811978A (en) | 1968-03-08 | 1968-08-22 | |
FR1587693D FR1587693A (en) | 1968-03-08 | 1968-08-30 | |
BE720289D BE720289A (en) | 1968-03-08 | 1968-09-02 | |
DE19681806279 DE1806279C2 (en) | 1968-06-27 | 1968-10-31 | Process for the preparation of sulfamyl-anthranilic acids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH343868A CH461523A (en) | 1968-03-08 | 1968-03-08 | Process for the preparation of sulfamyl-anthranilic acids |
CH957668A CH507220A (en) | 1968-03-08 | 1968-06-27 | Sulphamylanthranilic acids prepared from nitrobenzoic |
Publications (1)
Publication Number | Publication Date |
---|---|
CH507220A true CH507220A (en) | 1971-05-15 |
Family
ID=25693009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH957668A CH507220A (en) | 1968-03-08 | 1968-06-27 | Sulphamylanthranilic acids prepared from nitrobenzoic |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH507220A (en) |
-
1968
- 1968-06-27 CH CH957668A patent/CH507220A/en not_active IP Right Cessation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1620286C2 (en) | Process for the preparation of pyrrole derivatives | |
DE1795344B2 (en) | PROCESS FOR THE PREPARATION OF 3-AMINOISOTHIAZOLS | |
CH507220A (en) | Sulphamylanthranilic acids prepared from nitrobenzoic | |
DE2534962B2 (en) | cis-3,4-ureylenethiophane-1,1-dioxide and process for its preparation | |
DE2502951C3 (en) | Process for the production of orotic acid or thioorotic acid | |
CH649992A5 (en) | METHOD FOR PRODUCING N-CHLOROCARBONYL LACTAMES. | |
DE2264413A1 (en) | 2,4-DIAMINO-5- (ACYLOXYMETHYL) PYRIMIDINE | |
DE1770421C3 (en) | Process for the preparation of 1,3-dihydro-2H-1,4-benzodiazepin-2-one derivatives | |
DE1806867B2 (en) | Process for the preparation of substituted 4-hydroxypyrimidines | |
DE1770420C3 (en) | Process for the preparation of 1,3-dihydro-2H-1,4-benzodiazepin-2-one derivatives | |
DE1806279C2 (en) | Process for the preparation of sulfamyl-anthranilic acids | |
DE737931C (en) | Process for the preparation of 2,4-diaminochinazoline | |
DE1813241C3 (en) | ||
CH474490A (en) | Process for the preparation of new benzenesulfonylureas | |
AT216671B (en) | Process for the preparation of compounds of various penicillins with sulfonamides | |
AT326638B (en) | PROCESS FOR THE PREPARATION OF N (BETA DIETYLAMINO ETHYL) -4-AMINO-5-CHLORO-2-METHOXYBENZAMIDE | |
DE743661C (en) | Process for the preparation of N-substituted aminocarboxylic acids | |
DE1670677C (en) | Process for the preparation of 3,1-benzothiazines | |
DE3101960A1 (en) | "BASICLY SUBSTITUTED ANTHRANILE ACIDS, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE" | |
DE1240873B (en) | Process for the preparation of 4-halo-5-sulfamylanthranilic acid hydroxamides | |
CH507269A (en) | Sulphamylanthranilic acids prepared from nitrobenzoic | |
DE1770420B2 (en) | Process for the preparation of 1,3-dihydro-2H-1,4-benzodiazepin-2-one derivatives | |
DE2214488B2 (en) | Process for the preparation of 1-substituted 4-aminopyiTolin-3-ones (2) | |
DE3206886A1 (en) | METHOD FOR THE PRODUCTION OF 1- (4-CHLOROBENZOYL) -5-METHOXY-2-METHYL-3-INDOLACETOXYACETIC ACID | |
DE1670261A1 (en) | Process for the preparation of N-hexahydropyrimidyl- (4) -carbamine acid esters |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |