CH145995A - Process for the preparation of a sulfamic acid. - Google Patents

Process for the preparation of a sulfamic acid.

Info

Publication number
CH145995A
CH145995A CH145995DA CH145995A CH 145995 A CH145995 A CH 145995A CH 145995D A CH145995D A CH 145995DA CH 145995 A CH145995 A CH 145995A
Authority
CH
Switzerland
Prior art keywords
preparation
acid
sulfamic acid
quinoline
weight
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 CH145995A publication Critical patent/CH145995A/en

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  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung einer     Sulfaminsäure.            Sulfaminsäuren    der zyklischen Reihe,  welche ausser der     Sulfaminsäuregruppe          (-NHSO;;Fi)    noch freie     Hydroxyle    enthalten,  sind bisher nicht bekannt geworden.  



  Es wurde nun gefunden, dass     man    zu       2-Otynaphtalin-7-sulfaminsäure    von der For  mel  
EMI0001.0008     
    gelangen kann, wenn man 2.     7-Aminonaphtol     mit einem     N-sulfonierend    wirkenden     Mittel,     wie zum Beispiel     Chlorsulfonsäure,    Schwefel  trioxyd in     Tetrachloräthan,        Pyridinschwefel-          säure    in Gegenwart von säurebindenden Mit  teln, wie zum Beispiel     Pyridin,        Chinolin,        Di-          äthylanilin    umsetzt.  



  <I>Beispiel:</I>       11.6    Gewichtsteile     Chlorsulfonsäure   <B>(1</B> Hol.)  werden unterhalb 0   in 1.000 Gewichtsteile    trockenes     Chinolin    unter Rühren eingetragen,  sodann werden<B>159</B> Gewichtsteile (1     Mol)          2-Amino-7-oxynaphtalin    in fein     gepulvertem     Zustand zugegeben.

   Man erwärmt das Ge  misch 2 Stunden auf 40 bis 50   unter Rüh  ren und     Wasserausschluss.    Nach dem Erkal  ten wird mit Soda alkalisch gemacht und     das,          Chinolin    mit Wasserdampf abgeblasen  Durch Eindampfen der so gewonnenen Lö  sung erhält man das     Natriumsalz    der     Sul-          faminsäure    in kristallisierter Form.

   Durch       Umlösen    aus wenig Wasser kann es in     glän-          zenden        Blättchen    erhalten werden; es besitzt  die Formel:  
EMI0001.0036     
    Diese neue Verbindung liefert mit     tetrazo-          tiertem    4.     4'-Diamino-3.        3'-diozy        phenyl    ge-      kuppelt einen Farbstoff, der auf der Faser  mit Kupfersulfat nachbehandelt ein rot  stichiges Blau von vorzüglicher Wasch- und  Lichtechtheit ergibt.



  Process for the preparation of a sulfamic acid. Sulphamic acids of the cyclic series, which apart from the sulphamic acid group (-NHSO ;; Fi) also contain free hydroxyls, have not yet become known.



  It has now been found that 2-otynaphthalene-7-sulfamic acid of the formula
EMI0001.0008
    can be achieved if 2. 7-aminonaphthol is reacted with an N-sulfonating agent such as chlorosulfonic acid, sulfur trioxide in tetrachloroethane, pyridinosulfuric acid in the presence of acid-binding agents such as pyridine, quinoline, diethylaniline.



  <I> Example: </I> 11.6 parts by weight of chlorosulfonic acid <B> (1 </B> Hol.) Are added below 0 to 1,000 parts by weight of dry quinoline with stirring, then <B> 159 </B> parts by weight (1 mol ) 2-Amino-7-oxynaphthalene added in a finely powdered state.

   The mixture is heated to 40 to 50 for 2 hours with stirring and exclusion of water. After cooling, the solution is made alkaline with soda and the quinoline is blown off with steam. By evaporating the solution obtained in this way, the sodium salt of sulphamic acid is obtained in crystallized form.

   It can be obtained in shiny leaves by dissolving it with a little water; it has the formula:
EMI0001.0036
    This new compound delivers 4'-diamino-3 with tetrazzo. 3'-diozy phenyl coupled a dye which, after treatment with copper sulphate, gives the fiber a reddish blue of excellent washing and lightfastness.

 

Claims (1)

PATENTANSPRUCH: Zierfahren zur Darstellung von 2-Oxy- naphtalin=7-sulfaminsäure, dadurch gekenn zeichnet, dass man N-sulfonierend wirkende Mittel auf 2 . 7-Aminonaphtol bei Gegenwart säurebindender ;Mittel einwirken lässt. Der Körper ist eine kristallinische Sub stanz und sehr leicht löslich in Wasser. Er dient zur äIerstellung von Farbstoffen. PATENT CLAIM: Ornamental process for the preparation of 2-oxynaphthalene = 7-sulfamic acid, characterized in that N-sulfonating agents are applied to 2. 7-Aminonaphtol in the presence of acid-binding agents. The body is a crystalline substance and very easily soluble in water. It is used to produce dyes.
CH145995D 1928-11-08 1929-11-01 Process for the preparation of a sulfamic acid. CH145995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE145995X 1928-11-08

Publications (1)

Publication Number Publication Date
CH145995A true CH145995A (en) 1931-03-31

Family

ID=5671092

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145995D CH145995A (en) 1928-11-08 1929-11-01 Process for the preparation of a sulfamic acid.

Country Status (1)

Country Link
CH (1) CH145995A (en)

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