CH222488A - Process for the preparation of a diphenyl sulfone derivative. - Google Patents

Process for the preparation of a diphenyl sulfone derivative.

Info

Publication number
CH222488A
CH222488A CH222488DA CH222488A CH 222488 A CH222488 A CH 222488A CH 222488D A CH222488D A CH 222488DA CH 222488 A CH222488 A CH 222488A
Authority
CH
Switzerland
Prior art keywords
diphenyl sulfone
preparation
sulfone derivative
water
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH222488A publication Critical patent/CH222488A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines      iphenylsulfonabkömmlings.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Diphenyl-          sulfonabkömmlings,    das dadurch gekenn  zeichnet ist, dass     4-Acetylamino-diphenyl-          sulfon-4'-carbaminsäurephenylester    mit 2-(3'       Amino-benzoylamino)-naphthalin-3,6-disul-          fonsäure    in neutraler oder schwach saurer  Lösung umgesetzt wird. Das so erhältliche  Produkt bildet ein schwach gelbliches Pulver,  ,das in Wasser gut löslich ist. Es soll thera  peutische Anwendung finden.  



       Beispiel:     44,4 g     Mononatriumsalz    der     2-(3'-Amino-          benzoylamino)    -     naphthalin    - 3,6 -     disulfosäure       werden in 300 cm' Wasser     unter    Zusatz von  4 g     Ätznatron    gelöst. 41 g     4-Aeetylamino-          diphenylsulfan    - 4'-     carbaminsäurephenylester     und 200 cm'     Diogan    hinzugegeben, die Mi  schung auf ein     pH    = 7,5 eingestellt und  unter Rühren und     Rückfluss    gekocht.

   Nach  sechsstündigem Kochen gibt eine kleine  Probe, mit Wasser verdünnt, keine Fällung  mehr. Die klare Lösung wird mit Tierkohle  heiss filtriert und das Filtrat nach dem Er  kalten in 35 %     ige        Natriumehloridlösung    ein  gerührt. Dabei fällt ;das     Dinatriumsalz    der  Formel  
EMI0001.0025     
    aus. Es wird in Methanol gelöst, die     methyl-          alkeho.lische    Lösung von ungelöstem Natrium-    Chlorid filtriert, und zur Trockne einge  dampft.

        Die als Ausgangsstoff     verwendete    2-(3'       Amino-benzoyl)-aminonaphthalin-3,6-disul-          fonsäure    wird wie folgt hergestellt:       36,5g        Mononatriumsalz    der     2-Naphthyl-          amin-3,6-disulfonsäure    werden in 250 cm'  Wasser unter Zusatz von 4 g     Ätznatron    ge  löst, 30 g     Natriumacetat    hinzugegeben, und  hei einer Innentemperatur von     30-35      unter  Rühren 36,5 g     m-Nitrobenzoylchlorid    einge  tragen.

   Nach kurzer Zeit kristallisiert das  2 -     (3'-nitrobenzoylami        no)        -naphthalin    - 3,6 -     di-          sulfonsaure    Natrium aus. Es wird abgesaugt,  in heissem Wasser gelöst und diese     Lösung     unter Rühren     meine    siedende Mischung     aus     500 g Eisen, 1000 cm' Wasser und 10 cm'       Eisessig    eingetropft. Nach fünfstündigem  Kochen wird die Reaktionslösung mit Na  triumca.rbonat alkalisch gemacht, mit Tier  kohle heiss filtriert und das Filtrat nach dem    Erkalten mit viel Salzsäure versetzt.

   Dabei  fällt die     2-(3'-Aminobenzoylamino)-naphtha-          lin-3,6-disalfonsäure    kristallinisch aus. Sie  wird abgesaugt und bei 100   getrocknet.



  Process for the preparation of an iphenylsulfone derivative. The subject of the present patent is a process for the production of a diphenyl sulfone derivative, which is characterized in that 4-acetylamino-diphenyl-sulfone-4'-carbamic acid phenyl ester with 2- (3 'amino-benzoylamino) -naphthalene-3,6- disulfonic acid is reacted in neutral or weakly acidic solution. The product obtainable in this way forms a pale yellowish powder, which is readily soluble in water. It should be used therapeutically.



       Example: 44.4 g of the monosodium salt of 2- (3'-aminobenzoylamino) - naphthalene - 3,6 - disulfonic acid are dissolved in 300 cm 'of water with the addition of 4 g of caustic soda. 41 g of 4-ethylamino-diphenylsulfan-4'-carbamic acid phenyl ester and 200 cm 'Diogan were added, the mixture was adjusted to pH = 7.5 and refluxed with stirring.

   After boiling for six hours, a small sample, diluted with water, no longer gives any precipitation. The clear solution is filtered hot with animal charcoal and the filtrate is stirred into 35% sodium chloride solution after cold. The disodium salt of the formula falls
EMI0001.0025
    out. It is dissolved in methanol, the methyl alcoholic solution of undissolved sodium chloride is filtered and evaporated to dryness.

        The 2- (3 'amino-benzoyl) -aminonaphthalene-3,6-disulphonic acid used as starting material is prepared as follows: 36.5 g of the monosodium salt of 2-naphthylamine-3,6-disulphonic acid are dissolved in 250 cm' of water with the addition of 4 g of caustic soda, 30 g of sodium acetate are added, and 36.5 g of m-nitrobenzoyl chloride are added while stirring at an internal temperature of 30-35.

   After a short time, the 2- (3'-nitrobenzoylamino) -naphthalene-3,6-disulfonic acid sodium crystallizes out. It is suctioned off, dissolved in hot water, and my boiling mixture of 500 g of iron, 1000 cm 'of water and 10 cm' of glacial acetic acid is added dropwise to this solution while stirring. After five hours of boiling, the reaction solution is made alkaline with sodium carbonate, filtered hot with animal charcoal, and a lot of hydrochloric acid is added to the filtrate after cooling.

   The 2- (3'-aminobenzoylamino) -naphthalin-3,6-disalfonic acid precipitates in crystalline form. It is suctioned off and dried at 100.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Diphenyl- sulfonabkömmlings, dadurch gekennzeichnet, dass 4-Acetylamino-diphenylsulfon-4'-carb- aminsäurephenylester mit 2 - (3' - Amino- benzoylamino) - naphthalin- 3,6 - dieulfonsäure in neutraler oder schwach saurer Lösung um gesetzt wird. Das so erhältliche neue Pro dukt bildet ein schwach gelbliches Pulver, das in Wasser gut löslich ist. PATENT CLAIM: Process for the production of a diphenyl sulfone derivative, characterized in that 4-acetylamino-diphenylsulfone-4'-carbamic acid phenyl ester with 2 - (3 '- amino benzoylamino) - naphthalene-3,6 - dieulfonic acid in neutral or weakly acidic Solution is implemented. The new product available in this way forms a pale yellowish powder that is readily soluble in water.
CH222488D 1939-09-04 1940-08-05 Process for the preparation of a diphenyl sulfone derivative. CH222488A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE222488X 1939-09-04
CH218521T 1940-08-05

Publications (1)

Publication Number Publication Date
CH222488A true CH222488A (en) 1942-07-15

Family

ID=25726176

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222488D CH222488A (en) 1939-09-04 1940-08-05 Process for the preparation of a diphenyl sulfone derivative.

Country Status (1)

Country Link
CH (1) CH222488A (en)

Similar Documents

Publication Publication Date Title
CH222488A (en) Process for the preparation of a diphenyl sulfone derivative.
CH237570A (en) Process for the preparation of a diphenyl sulfone derivative.
DE530825C (en) Process for the preparation of arylaminonaphthalene derivatives
DE658780C (en) Process for the production of pyrene cones
DE467626C (en) Process for the preparation of sulfo-, aminosulfo- and oxysulfonic acids N, ªÏ-aminoalkylated aminonaphthalenes
DE693418C (en) Process for the production of pellets of aromatic hydrazine-N-sulfonic acids
CH218521A (en) Process for the preparation of a diphenyl sulfone derivative.
DE733700C (en) Process for the production of chromable dyes of the phthalein series
CH296256A (en) Process for the preparation of a copper-containing disazo dye.
CH200364A (en) Process for the production of a new condensation product.
CH267295A (en) Process for the preparation of an acidic disazo dye.
CH181160A (en) Process for the preparation of a new heterocyclic sulfonic acid.
CH227528A (en) Process for the preparation of a diphenyl sulfone derivative.
CH237128A (en) Process for the preparation of a new benzenesulfonamide derivative.
CH131288A (en) Process for the preparation of a polysulfide ester of an aromatic carboxylic acid.
CH208087A (en) Process for preparing a sulfonic acid amide compound.
CH224356A (en) Process for the production of an acidic wool dye.
CH230855A (en) Process for the preparation of a benzenesulfonamide derivative.
CH214169A (en) Process for the preparation of 1-sulfomethyl-4-chloro-5-oxynaphthalene.
CH222489A (en) Process for the preparation of a diphenyl sulfone derivative.
CH292674A (en) Process for the preparation of a new monoazo dye.
CH239146A (en) Process for the production of a new benzene sulfonamide derivative.
CH279526A (en) Process for the preparation of an azo dye.
CH158703A (en) Process for the production of a neutral-soluble complex salt of trivalent antimony.
CH220106A (en) Process for the production of a new azo dye.