CH147682A - Process for the preparation of an aminodiphenylamine derivative. - Google Patents

Process for the preparation of an aminodiphenylamine derivative.

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Publication number
CH147682A
CH147682A CH147682DA CH147682A CH 147682 A CH147682 A CH 147682A CH 147682D A CH147682D A CH 147682DA CH 147682 A CH147682 A CH 147682A
Authority
CH
Switzerland
Prior art keywords
aminodiphenylamine
derivative
preparation
nitrosotoluene
production
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 CH147682A publication Critical patent/CH147682A/en

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Description

  

  Verfahren zur Herstellung eines     Aminodiphenylaminderivates.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Aminodi-          phenylaminderivates,    dadurch gekennzeichnet,       dass    man     p-Nitrosotoluol    mit     o-Nitrosotoluol     kondensiert und das Kondensationsprodukt  mit einem Reduktionsmittel behandelt.  



  Durch Kristallisation des salzsauren Salzes  gereinigt, hat das erhaltene, bisher nicht  bekannte 4'.<B>3 -</B>     Dimethyl-4-amiiiodiphenylamin     den Schmelzpunkt<B>73-74 0.</B> Es soll als  Zwischenprodukt zur Herstellung von Farb  stoffen verwendet werden.  



  <I>Beispiel:</I>  Je<B>60</B> Teile     p-Nitrosotoluol    und     o-Nitroso-          toluol    werden zusammen geschmolzen und  noch warm in<B>1000</B> Teile Schwefelsäure von  <B>60 1</B> B6 bei<B>8-10 1</B> in einer Stunde     eintropfen     gelassen. Die klare Lösung wird in Eiswasser  ausgegossen, wobei das Kondensationsprodukt  in bräunlichen Flocken ausfällt.

   Es wird ab  gesaugt, gewaschen (Schmelzpunkt des gelb  braunen Körpers nach     Umlösen    mit Natron  lauge und Fällen mit Salzsäure<B>157-158 0)</B>    in etwa<B>5000</B>     Volumteilen    verdünnter Natron  lauge gelöst und vom geringen braunen Rück  stand     abfiltriert.    Die klare, tiefrote Lösung  wird mit einer Lösung von<B>180</B> Teilen ge  schmolzenem Schwefelnatrium in Wasser  versetzt und langsam auf<B>80 0</B> erwärmt, wobei  das Reduktionsprodukt ölig ausfällt, aber beim  Erkalten schnell erstarrt.



  Process for the preparation of an aminodiphenylamine derivative. The present patent relates to a process for the preparation of an aminodiphenylamine derivative, characterized in that p-nitrosotoluene is condensed with o-nitrosotoluene and the condensation product is treated with a reducing agent.



  Purified by crystallization of the hydrochloric acid salt, the previously unknown 4 '. <B> 3 - </B> dimethyl-4-amiiodiphenylamine obtained has the melting point <B> 73-74 0. </B> It is said to be an intermediate product for Manufacture of dyes are used.



  <I> Example: </I> <B> 60 </B> parts each of p-nitrosotoluene and o-nitrosotoluene are melted together while still warm into <B> 1000 </B> parts of sulfuric acid of <B> 60 1 </B> B6 at <B> 8-10 1 </B> allowed to drip in in one hour. The clear solution is poured into ice water, the condensation product precipitating in brownish flakes.

   It is sucked off, washed (melting point of the yellow-brown body after dissolving with caustic soda and precipitating with hydrochloric acid <B> 157-158 0) </B> in about <B> 5000 </B> parts by volume of dilute caustic soda and dosed small brown residue was filtered off. The clear, deep red solution is mixed with a solution of <B> 180 </B> parts of molten sodium sulphide in water and slowly heated to <B> 80 0 </B>, the reduction product precipitating out as an oily product, but solidifying quickly on cooling .

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Amino- diphenylaininderivates, dadurch gekennzeich net, dass man p-Nitrosotoluol mit o-Nitrosoto- luolkondensiert und das Kondensationsprodukt mit einem Reduktionsmittel behandelt. Durch Kristallisation des salzsauren Salzes gereinigt, bat das erhaltene 4'.3-Diinethyl-4- aminodiphenylamin den Schmelzpunkt<B>78</B> bis 74<B>0.</B> Es soll als Zwischenprodukt zur Herstel lung von Farbstoffen verwendet werden. PATENT CLAIM: Process for the production of an amino diphenylamine derivative, characterized in that p-nitrosotoluene is condensed with o-nitrosotoluene and the condensation product is treated with a reducing agent. Purified by crystallization of the hydrochloric acid salt, the 4'.3-diinethyl-4-aminodiphenylamine obtained had a melting point of 78 to 74 0. It is said to be an intermediate product for the production of dyes be used.
CH147682D 1928-10-09 1929-09-20 Process for the preparation of an aminodiphenylamine derivative. CH147682A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE147682X 1928-10-09
CH145992T 1929-09-20

Publications (1)

Publication Number Publication Date
CH147682A true CH147682A (en) 1931-06-15

Family

ID=25714773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH147682D CH147682A (en) 1928-10-09 1929-09-20 Process for the preparation of an aminodiphenylamine derivative.

Country Status (1)

Country Link
CH (1) CH147682A (en)

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