CH147333A - Process for the preparation of a sulfonic acid of a nitrohalodiaryl ketone. - Google Patents

Process for the preparation of a sulfonic acid of a nitrohalodiaryl ketone.

Info

Publication number
CH147333A
CH147333A CH147333DA CH147333A CH 147333 A CH147333 A CH 147333A CH 147333D A CH147333D A CH 147333DA CH 147333 A CH147333 A CH 147333A
Authority
CH
Switzerland
Prior art keywords
preparation
ketone
nitrohalodiaryl
sulfonic acid
niti
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 CH147333A publication Critical patent/CH147333A/en

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

Description

  

  Verfahren zur Darstellung einer     Stilfosäure    eines     Nitroheilogendiaryllietons.       Gegenstand vorliegender Erfindung ist ein  Verfahren zur Darstellung einer     Sulfosäure     eines     Nitrohalogendiapylketons,    dadurch ge  kennzeichnet,     dass    man<B>8 -</B>     Nitro   <B>-</B> 4<B>-</B>     chlor-          benzophenon    mit einem     sulfurierenden    Mittel  behandelt.

      <I>Beispiel:</I>    <B>261</B> Gewichtsteile<B>3 -</B>     Nitro   <B>-</B> 4<B>-</B>     chlor-          benzophenon    werden in<B>1000</B> Gewichtsteilen  Schwefelsäure mit einem     Anhydridgehalt    von  20     1/o    bei Zimmertemperatur gelöst. Es erfolgt  nur schwache Temperaturerhöhung.

   Dann er  wärmt man unter Rühren<B>1</B> Stunde auf<B>601)</B>  und 2 Stunden auf<B>80-90 0.</B> Das     Sulflerungs-          gemisch    wird auf Eis ausgetragen und die  neue     Sulfosäure,    die ein wertvolles Ausgangs  material zur Herstellung von Farbstoffen dinr-    stellt, mit Kochsalz abgeschieden.     Sie    fällt  zuerst ölig     und    erstarrt dann     allmählieli    zu       eineirt    dicken Brei weisser, glänzender     Nädel-          eben.  



  Process for the preparation of a stilfo acid of a nitroheilogendiaryllietone. The present invention relates to a method for the preparation of a sulfonic acid of a nitrohalogen diapyl ketone, characterized in that <B> 8 - </B> Nitro <B> - </B> 4 <B> - </B> chlorobenzophenone with treated with a sulfurizing agent.

      <I> Example: </I> <B> 261 </B> parts by weight <B> 3 - </B> Nitro <B> - </B> 4 <B> - </B> chlorobenzophenone are in <B> 1000 </B> parts by weight of sulfuric acid with an anhydride content of 20 1 / o dissolved at room temperature. There is only a slight increase in temperature.

   Then it is heated with stirring <B> 1 </B> hour to <B> 601) </B> and 2 hours to <B> 80-90 0. </B> The sulphurizing mixture is poured out onto ice and the new sulphonic acid, which is a valuable starting material for the production of dyes, is deposited with common salt. At first it falls oily and then gradually solidifies into a thick, unified paste of white, shiny needles.

Claims (1)

<B>PATENTANSPRUCH-</B> Verfahren zur Darstellung einer Sulfosäure eines Niti-ohalogendiarylketons, dadurch ge- kennzeichnet,dass man 3-Niti-o-4-elilor-beiizo- pherion mit einem sulfurierenden Mittel be handelt. Das neue Produkt bildet weisse, glänzende Nädelchen. Es stellt ein wertvolles Ausgangs- raaterial für die Herstellung von Farbstoffen dar. <B> PATENT CLAIM </B> Process for the preparation of a sulphonic acid of a niti-ohalodiaryl ketone, characterized in that 3-niti-o-4-elilor-beiizopherion is treated with a sulphurizing agent. The new product forms white, shiny needles. It is a valuable raw material for the manufacture of dyes.
CH147333D 1928-07-04 1929-06-24 Process for the preparation of a sulfonic acid of a nitrohalodiaryl ketone. CH147333A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE147333X 1928-07-04
CH143387T 1929-06-24

Publications (1)

Publication Number Publication Date
CH147333A true CH147333A (en) 1931-05-31

Family

ID=25714266

Family Applications (1)

Application Number Title Priority Date Filing Date
CH147333D CH147333A (en) 1928-07-04 1929-06-24 Process for the preparation of a sulfonic acid of a nitrohalodiaryl ketone.

Country Status (1)

Country Link
CH (1) CH147333A (en)

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