DE572723C - Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid - Google Patents

Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid

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Publication number
DE572723C
DE572723C DEI41825D DEI0041825D DE572723C DE 572723 C DE572723 C DE 572723C DE I41825 D DEI41825 D DE I41825D DE I0041825 D DEI0041825 D DE I0041825D DE 572723 C DE572723 C DE 572723C
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DE
Germany
Prior art keywords
sulfonic acid
aminonaphthalene
chlorine
parts
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.)
Expired
Application number
DEI41825D
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German (de)
Inventor
Dr Theo Jacobs
Dr Max Lange
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
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IG Farbenindustrie AG
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Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI41825D priority Critical patent/DE572723C/en
Application granted granted Critical
Publication of DE572723C publication Critical patent/DE572723C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01Sulfonic acids
    • C07C309/28Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C07C309/47Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Darstellung von Chlor- und Bromderivaten der 2-Aminonaphthalin-1-sulfonsäure Halogenderivate der 2-Aminonaphthalini-sulfonsäure sind bisher nicht bekanntgeworden. Läßt man auf die Tobiassäure nach Festlegung der Aminogruppe, beispielsweise durch den Acetylrest, Halogen einwirken, so erhält man unter Abspaltung der Sulfonsäuregruppe die in i-Stellung halogenierten 2-iNaphthy lamme.Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid Halogen derivatives of 2-aminonaphthalenesulfonic acid have not yet become known. If you let the Tobias acid after fixing the amino group, for example the acetyl radical, halogen act, is obtained with elimination of the sulfonic acid group the 2-iNaphthy lambs halogenated in the i-position.

Es wurde nun gefunden, daß man auf einfache Weise zu Chlor- und Bromderivaten der 2-Aminonaphthalin-i-sulfonsäure kommen kann, wenn man chlorierte oder bromierte 2-Naphthole zunächst in die in i-Stellung sulfonierten Derivate überführt, wie dies beim 6-Brom-2-oxynaphthalin bereits bekannt ist (vgl. Chemical News 74 [18g6], Seite 302, linke Spalte, Zeile g bis 13), und die so erhaltenen Halogen-2-oxynaphthalini-sulfonsäuren oder ihre Salze mit Ammoniak unter Zusatz, von Sulfiten beiTemperaturen über ioo° behandelt. Dieses Ergebnis war überraschend, denn es war nicht vorauszusehen, ob nicht die Halogenatome gleichzeitig oder sogar zuerst abgespalten bzw. durch die Aminogruppe ersetzt werden würden. Beispiele 1. 31 Gewichtsteile des Natriumsalzes der 6-Chlor-a-oxynaphtbalin-i-su@lfonsäure (erhältlich durch Behandeln von 6-Chlor-2-naphthol mit Schwefelsäure oder Chlorsulfonsäure unter gelinden, Bedingungen), welche a8 Gewichtsteilen reinem Produkt entsprechen, werden mit 3o Gewichtsteilen 25 °/oigem wäßrigem Ammoniak, 12 Gewichtsteilen Ammoniumsulfit und 3o Teilen Wasser im geschlossenen Gefäß .etwa 30 Stunden auf 15o° erhitzt. Das Reaktionsprodukt wird mit Wasser aufgenommen, das Ammoniak abdestilliert, die Lösung gegebenenfalls von Verunreinigungen filtriert und aus dem Filtrat das neue Produkt durch Zusatz von Natriumchlorid abgeschieden. Das Natriumsalz der 6-Chlor-2-aminonaphthalin-i-sulfonsäure löst sich in kaltem Wasser im Verhältnis 1 : 30. Aus sehr viel Alkohol kristallisiert es in weißen, glänzenden Blättchen. Aus der wäßrigen Lösung -des Natriumsalzes fällt auf Zusatz von Mineralsäure die freie Säure in weißen Flocken aus, die sich unter dem Mikroskop als dünnei Nadeln zeigen. Sie schmilzt bei sehr hoher Temperatur unter Zersetzung, ist in Wasser schwer löslich und gibt eine gelbliche, schwer lösliche_ Diazoverbindung.It has now been found that chlorine and bromine derivatives of 2-aminonaphthalene-i-sulfonic acid can be obtained in a simple manner if chlorinated or brominated 2-naphthols are first converted into the i-position sulfonated derivatives, as is the case with the 6- Bromo-2-oxynaphthalene is already known (see. Chemical News 74 [18g6], page 302, left column, lines g to 13), and the halogen-2-oxynaphthalenesulfonic acids obtained in this way or their salts with ammonia with the addition of Treated sulfites at temperatures above 100 °. This result was surprising because it could not be foreseen whether the halogen atoms would not be split off at the same time or even first or replaced by the amino group. Examples 1. 31 parts by weight of the sodium salt of 6-chloro-a-oxynaphtbalin-i-su @ lfonic acid (obtainable by treating 6-chloro-2-naphthol with sulfuric acid or chlorosulfonic acid under mild conditions), which correspond to a8 parts by weight of pure product, are heated with 30 parts by weight of 25% aqueous ammonia, 12 parts by weight of ammonium sulfite and 30 parts of water in a closed vessel at 150 ° for about 30 hours. The reaction product is taken up in water, the ammonia is distilled off, the solution is optionally filtered to remove impurities and the new product is separated out from the filtrate by adding sodium chloride. The sodium salt of 6-chloro-2-aminonaphthalene-i-sulfonic acid dissolves in cold water in a ratio of 1: 30. From a lot of alcohol it crystallizes in white, shiny flakes. From the aqueous solution of the sodium salt, the addition of mineral acid precipitates the free acid in white flakes, which appear under the microscope as thin needles. It melts at a very high temperature with decomposition, is sparingly soluble in water and gives a yellowish, sparingly soluble diazo compound.

z. 156 Gewichtsteile 7-chlor-z-oxynaph thalin-i-sulfonsauresNatrium, welche 1q.o Gewichtsteilen ioo °/oigem Produkt entsprechen, werden mit Zoo Gewichtsteilen; 25 °/oigem wäßrigem Ammoniak, 112 Gewichtsteilen 52 °/oigem Ammoniumsulfit und ioo Teilen Wasser, wie in Beispiel i angegeben, behandelt. Das 'Natriumsalz der so .erhaltenen 7-Chlor-2-aminonaphthalin-i-sulfonsäure löst sich in kaltem -Wasser- im Verhältnis i : 2o. Natriumsalz und freie Säure zeigen im übrigen ähnliche Eigenschaften wie das in Beispiel z beschriebene Produkt.z. 156 parts by weight of 7-chloro-z-oxynaphthalin-i-sulfonic acid sodium, which correspond to 1q.o parts by weight of 100 per cent of the product are converted to zoo parts by weight; 25% aqueous ammonia, 112 parts by weight of 52% ammonium sulphite and ioo share Water as indicated in Example i, treated. The 'sodium salt the 7-chloro-2-aminonaphthalene-i-sulfonic acid obtained in this way dissolves in cold water in the ratio i: 2o. Otherwise, the sodium salt and the free acid show similar properties like the product described in example z.

3. i7o Gewichtsteile 7-brom-2-oxynaphthalin-i-sulfonsaures Natrium, welche 163 Gewichtsteile ioo%iges Produkt enthalten, werden mit Zoo Teilen 25 °/oigem Ammoniak, 11:2 Teilen 52 °/oigem ' Ammoniumsulfit und 15o Teilen Wasser nach Beispiel i behandelt. Man erhält so die 7-Brom-2-aminonaphthalini-sulfonsäure. Ihr Natriumsalz löst sich in kaltem Wasser im Verhältnis i ::2o. Seine übrigen Eigenschaften und diejenigen oder freien Säure entsprechen ungefähr demjenigen der vorher beschriebenen Verbindungen.3. 170 parts by weight of 7-bromo-2-oxynaphthalene-i-sulfonic acid sodium, which contain 163 parts by weight of 100% product are mixed with Zoo parts 25% Ammonia, 11: 2 parts of 52% ammonium sulfite and 150 parts of water according to the example i treated. 7-Bromo-2-aminonaphthalenesulfonic acid is obtained in this way. Your sodium salt dissolves in cold water in the ratio i :: 2o. Its other properties and those or free acids roughly correspond to those previously described Links.

Verwendet man an Stelle der Salze als Ausgangsstoffe die freien Säuren, so erhält man die Ammoniumsalze der halogenierten Aminosulfonsäuren.If the free acids are used instead of the salts as starting materials, in this way the ammonium salts of the halogenated aminosulfonic acids are obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Chlor-und Bromderivaten der 2-Aminonaphthalin-i-su,lfonsäure, dadurch gekennzeichnet, daB man Chlor- oder Bromderivate der 2-Oxynaphthalin-i-sulfonsäure oder deren Salze mit Ammoniak unter Zusatz von Sulfiten auf Temperaturen über ioo° erhitzt.PATENT CLAIM: Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-i-su, lfonic acid, characterized in that chlorine or Bromine derivatives of 2-oxynaphthalene-i-sulfonic acid or their salts with ammonia under Addition of sulphites heated to temperatures above 100 °.
DEI41825D 1931-06-16 1931-06-16 Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid Expired DE572723C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI41825D DE572723C (en) 1931-06-16 1931-06-16 Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI41825D DE572723C (en) 1931-06-16 1931-06-16 Process for the preparation of chlorine and bromine derivatives of 2-aminonaphthalene-1-sulfonic acid

Publications (1)

Publication Number Publication Date
DE572723C true DE572723C (en) 1933-03-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34208E (en) * 1989-04-17 1993-03-30 Swinging bob toy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34208E (en) * 1989-04-17 1993-03-30 Swinging bob toy

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