CH101318A - Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. - Google Patents
Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene.Info
- Publication number
- CH101318A CH101318A CH101318DA CH101318A CH 101318 A CH101318 A CH 101318A CH 101318D A CH101318D A CH 101318DA CH 101318 A CH101318 A CH 101318A
- Authority
- CH
- Switzerland
- Prior art keywords
- solution
- compound
- dioxydiaminoarsenobenzene
- new compound
- aqueous solution
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 title claims description 25
- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- 239000002244 precipitate Substances 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 230000001988 toxicity Effects 0.000 claims description 8
- 231100000419 toxicity Toxicity 0.000 claims description 8
- 229930182830 galactose Natural products 0.000 claims description 6
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 claims description 5
- 229960001553 phloroglucinol Drugs 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 3
- -1 galactose compound Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 241001465754 Metazoa Species 0.000 claims description 2
- 241000699670 Mus sp. Species 0.000 claims description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 claims description 2
- 208000005374 Poisoning Diseases 0.000 claims description 2
- 241000700159 Rattus Species 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000003776 cleavage reaction Methods 0.000 claims description 2
- 238000006193 diazotization reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000035876 healing Effects 0.000 claims description 2
- 238000010253 intravenous injection Methods 0.000 claims description 2
- 230000007794 irritation Effects 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000006069 physical mixture Substances 0.000 claims description 2
- 231100000572 poisoning Toxicity 0.000 claims description 2
- 230000000607 poisoning effect Effects 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 230000007017 scission Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 208000024891 symptom Diseases 0.000 claims description 2
- 208000006379 syphilis Diseases 0.000 claims description 2
- 230000001225 therapeutic effect Effects 0.000 claims description 2
- 238000002560 therapeutic procedure Methods 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims 3
- FHIVAFMUCKRCQO-UHFFFAOYSA-N diazinon Chemical compound CCOP(=S)(OCC)OC1=CC(C)=NC(C(C)C)=N1 FHIVAFMUCKRCQO-UHFFFAOYSA-N 0.000 claims 1
- 230000003472 neutralizing effect Effects 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 3
- AWYSLGMLVOSVIS-UHFFFAOYSA-N phenyl(phenylarsanylidene)arsane Chemical compound C1=CC=CC=C1[As]=[As]C1=CC=CC=C1 AWYSLGMLVOSVIS-UHFFFAOYSA-N 0.000 description 3
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/66—Arsenic compounds
- C07F9/70—Organo-arsenic compounds
- C07F9/74—Aromatic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
Description
Verfahren zur Darstellung einer leicht wasserlöslichen, neutral reagierenden Verbindung des Dioxydiaminoarsenobenzols. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung einer leicht wasserlöslichen, neutral reagierenden Verbin dung des Dioxydiaminoarsenohenzols, welches darin besteht, .dass man Dioxydiaminoarseno- benzol auf wässerige Lösungen von G.alaktose einwirken lässt und aus,
der wässerigen Lösung das entstandene Reaktionsprodukt unter Ver wendung .eines grossen Überschusses einer mit Wasser mischbaren orga.nisehen Flüssigkeit, welche die Verbindung nicht löst, .ausfällt.
Bei der Einwirkung von Galaktose auf das Dioxydiaminoarsenobenzol erhält man hellgelbe bis goldgelbe klare Lösungen. Durch Eingiessen .dieser wässerigen Lösung in einen grossen Überschuss von Methylalh:
ohol, Äthyl- alkoliol, Isopropyl,alkohol, Aceton und der gleichen. fällt die neue Verbindung als gut filtrierbarer gelber Niederschlag aus, der nach dem Abtrennen der Flüssigkeit durch Nach waschen und Trocknen in reiner Form erhal ten wird. Die neue Verbindung entsteht auch, wenn man von den Salzen .des Dioxydiamino- arsenobenzols ausgeht und die Base nicht als solche isoliert.
Die Galaktose-Verbindung des Dioxydia- minoarsenobenzols stellt ein hellgelbes bis gelblichgrünes, nicht hygroskopisches Pulver dar, das sich in Wasser leicht und mit neu traler Reaktion löst.
Dass es sich um eine neue Verbindung und nicht um ein physikalisches Gemisch handelt, geht aus folgernden Eigenschaften hervor. Die wässerige Lösung der neuen Verbindung gibt weder mit Salzsäure noch mit Natronlauge Niederschläge. Erhitzt man sie aber mit Salz säure, so erfolgt Spaltung in die Komponen ten, worauf beim Neutralisieren mit Natron lauge das freie Dioxydiaminoarsenobenzol in Form eines (dicken Niederschlages ausfällt, der im Überschuss von Natronlauge löslich ist.
Diazotiert man eine frisch bereitete, sehr verdünnte Lösung der neuen Verbindung und fügt in alkalischer Lösung verdünnte Phlo- rogluzinlösung hinzu, so ändert idie gelbe Diazolösung ihre Färbung kaum.
Hat man dagegen die Lösung vordem Diazotieren mit Salzsäure erwärmt, so erhält man bei der Kupplung der Diazolösung mit Phlorogluzin die bekannte intensive Rotfärbung, .die diazo- tiertes Dioxydiamino,arsenobenzol beim Kup peln mit Phlorogluzin ergibt.
Auf Zusatz verdünnter Schwefelsäure gibt die wässerige Lösung der neuen Verbindung keinen Nieder- Z, schlag; erwärmt man dagegen die Lösung mit Schwefelsäure und kühlt ab, so fällt das un lösliche Sulfat ,desDioxydiaminoarsenobenzols als hellgelber Niederschlag aus.
Infolge,der geschützten Aminogruppe ist die Verbindung im Vergleich zu andern Ar- senobenzolderivaten gegen Luftoxydation auch in wässeriger Lösung - recht beständig. Das feste Präparat ist unter Luftabschluss absolut haltbar; auch bei lang andauerndem Aufbewahren bei tropischer Temperatur trii:t keine Erhöhung der Toxizität ein.
Bei der genauen Bestimmung der Toxizi- tät an Mäusen, Ratten und Kaninchen ergab sich, da.ss die neue Verbindung eine über raschend geringe Giftigkeit besitzt; diese ist gegenüber derjenigen .der Ausgangsprodukte um ein Vielfaches herabgesetzt. Trotz dieser bedeutend herabgesetzten Giftigkeit. ist die therapeutische Wirkung des Präparates nicht vermindert.
Vielmehr zeigt es sowohl an spi- rillen- und trypanosomeninfizierten Tieren, wie auch an Syphilis kranken Menschen die dem Dioxydia.minoarsenobenzol eigene eb,a- rakteristische Heilwirkung, was auf die leichte Spaltbarkeit des neuen Moleküls im Organismus zurückzuführen ist.
Die wäs serige Lösung der neuen Verbindung kann subkutan, intramuskulär und intravenös in jiziert werden, ohne dass irgendwelche Reiz erscheinungen auftreten; insbesondere fehlen bei intravenöser Injektion diejenigen Vergif- tungssym=ptome, welche man als Shoekwir- kungen bezeichnet.
Die neue Verbindung soll in der Therapie Verwendung finden. <I>Beispiel:</I> Man zerteilt 1 Gewichtsteil Dioxv.diami- noa.rsenobenzol in 6 Gewichtsteilen warmer Galaktoselösung (von 50 Gewielitsprozent) und erwärmt gelinde auf,clem Wasserbad, bis völlige Lösung eingetreten ist.
Nach dem Er kalten rührt man die goldgelbe klare Lösung in 60 Raumteile absoluten Alkohol ein, fügt darnach unter Umrühren nochmals die gleiche Menge Alkohol zu und trennt den ausgefalle nen Niederschlag von der alkoholischen Flüs- sigkeit.
Man erhält nach dem Trocknen ein hell gelbes Pulver, Glas sich in Wasser äusserst leicht löst. Die Bestimmung des Arsengehaltes weit auf eine Verbindung von 1 Molekül Dioxvdianiinoarsenobenzol mit ? lblolekülc@ri Galaktose hin.
Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. The present invention relates to a process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenohenzene, which consists in allowing dioxydiaminoarsenobenzene to act on aqueous solutions of G.alactose and
the resulting reaction product of the aqueous solution using a large excess of an organic liquid which is miscible with water and does not dissolve the compound precipitates.
The action of galactose on the dioxydiaminoarsenobenzene gives light yellow to golden yellow clear solutions. By pouring this aqueous solution into a large excess of methylalh:
ohol, ethyl alcohol, isopropyl, alcohol, acetone and the like. the new compound precipitates out as a readily filterable yellow precipitate, which is obtained in pure form after the liquid has been separated off by washing and drying. The new compound is also formed when starting from the salts of the dioxydiamino arsenobenzene and not isolating the base as such.
The galactose compound of dioxydiaminoarsenobenzene is a light yellow to yellowish green, non-hygroscopic powder that dissolves easily in water with a neutral reaction.
The fact that it is a new compound and not a physical mixture can be seen from the following properties. The aqueous solution of the new compound does not precipitate with either hydrochloric acid or sodium hydroxide solution. However, if they are heated with hydrochloric acid, they split into the components, whereupon, when neutralized with sodium hydroxide solution, the free dioxydiaminoarsenobenzene precipitates out in the form of a thick precipitate which is soluble in excess sodium hydroxide solution.
If a freshly prepared, very dilute solution of the new compound is diazotized and an alkaline solution of phloroglucine is added to it, the yellow diazo solution hardly changes its color.
If, on the other hand, the solution has been warmed with hydrochloric acid prior to diazotization, coupling the diazo solution with phloroglucin gives the well-known intense red color that diazo-tated dioxydiamino arsenobenzene gives when coupling with phloroglucin.
When dilute sulfuric acid is added, the aqueous solution of the new compound gives no precipitate; If, on the other hand, the solution is heated with sulfuric acid and cooled, the insoluble sulfate, desDioxydiaminoarsenobenzols precipitates out as a pale yellow precipitate.
As a result of the protected amino group, the compound, compared to other arsenobenzene derivatives, is quite resistant to air oxidation, even in aqueous solution. The solid preparation is absolutely stable in the absence of air; no increase in toxicity occurs even after long periods of storage at tropical temperatures.
Exact determination of the toxicity in mice, rats and rabbits showed that the new compound was surprisingly low in toxicity; this is reduced many times over that of the starting products. Despite this significantly reduced toxicity. the therapeutic effect of the preparation is not reduced.
Rather, it shows the characteristic healing effect of dioxydia.minoarsenobenzene in animals infected with spirals and trypanosomes as well as in people suffering from syphilis, which is due to the easy cleavage of the new molecule in the organism.
The aqueous solution of the new compound can be injected subcutaneously, intramuscularly and intravenously without causing any irritation; In particular, those poisoning symptoms which are called shoek effects are absent with intravenous injection.
The new compound should be used in therapy. <I> Example: </I> 1 part by weight of dioxv.diaminoa.rsenobenzene is divided into 6 parts by weight of warm galactose solution (from 50% by weight) and warmed up gently on the water bath until complete dissolution has occurred.
After cooling, the golden yellow clear solution is stirred into 60 parts by volume of absolute alcohol, then the same amount of alcohol is added again with stirring and the precipitate which has precipitated is separated from the alcoholic liquid.
After drying, a light yellow powder is obtained; glass dissolves extremely easily in water. The determination of the arsenic content is based on a compound of 1 molecule of dioxvdianiinoarsenobenzene with? lblolekülc @ ri galactose out.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH101318T | 1922-06-03 | ||
CH101053T | 1922-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH101318A true CH101318A (en) | 1923-09-17 |
Family
ID=25705943
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH101053D CH101053A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
CH101316D CH101316A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
CH101318D CH101318A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
CH101317D CH101317A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH101053D CH101053A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
CH101316D CH101316A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH101317D CH101317A (en) | 1922-06-03 | 1922-06-03 | Process for the preparation of a readily water-soluble, neutrally reacting compound of dioxydiaminoarsenobenzene. |
Country Status (1)
Country | Link |
---|---|
CH (4) | CH101053A (en) |
-
1922
- 1922-06-03 CH CH101053D patent/CH101053A/en unknown
- 1922-06-03 CH CH101316D patent/CH101316A/en unknown
- 1922-06-03 CH CH101318D patent/CH101318A/en unknown
- 1922-06-03 CH CH101317D patent/CH101317A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH101317A (en) | 1923-09-17 |
CH101316A (en) | 1923-09-17 |
CH101053A (en) | 1923-09-01 |
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