CH107785A - Process for the preparation of 1: 3: 4-trichloro-b-naphthylamine. - Google Patents

Process for the preparation of 1: 3: 4-trichloro-b-naphthylamine.

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Publication number
CH107785A
CH107785A CH107785DA CH107785A CH 107785 A CH107785 A CH 107785A CH 107785D A CH107785D A CH 107785DA CH 107785 A CH107785 A CH 107785A
Authority
CH
Switzerland
Prior art keywords
naphthylamine
trichloro
preparation
solution
pentachloro
Prior art date
Application number
Other languages
German (de)
Inventor
A-G Durand Huguenin
Original Assignee
Durand & Huguenin 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 Durand & Huguenin Ag filed Critical Durand & Huguenin Ag
Publication of CH107785A publication Critical patent/CH107785A/en

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Description

  

  Verfahren zur Darstellung von     1:3:4-Trichlor-P-naphtylamin.       Im Hauptpatent ist ein Verfahren be  schrieben worden, nach welchem aus     Okto-          chlor-chlorketiminohegahydrobenzol    durch Re  duktionsmittel unter Vermeidung von Hydro  lyse, so dass der     Stickstoff    im Molekül ver  bleibt,     Pentachloranilin    dargestellt werden  kann.  



  In ähnlicher Weise lässt sich aus     Penta-          chlor-p-chlorketiminotetrahydronaphtalin,    wie  dieses nach dem Verfahren des Schweiz. Pa  tentes 105644 erhalten wird, in vorteilhafter  Weise     1:3:4-Trichlor-p-naphtylamin    von der  Formel  
EMI0001.0009     
    darstellen.    <I>Beispiel:</I>  250     gr        calciniertes        Natriumsulfid    werden  heiss in Alkohol gelöst, hierauf wird die Lö  sung filtriert und abgekühlt. Das zum Teil    auskristallisierende Schwefelnatrium wird in  der Lösung belassen.

   Nun     werden,    indem  man die Temperatur konstant auf<B>30'</B> C  hält, 200     gr        Pentachlor-ss-chlorketiminotetra-          hydronaphtalin    .in kleinen Portionen in die  Lösung eingetragen. Nach beendeter Reaktion  wird noch während einiger Zeit auf dem  Wasserbad erwärmt, dann wird die Lösung  mit Wasser versetzt und dadurch das Amin  ausgefällt. Eventuell gleichzeitig gebildetes       Naphtol    bleibt in Lösung. Der Niederschlag  wird     abfiltriert,    getrocknet und aus Benzin  umkristallisiert.



  Process for the preparation of 1: 3: 4-trichloro-P-naphthylamine. The main patent describes a process according to which pentachloroaniline can be prepared from octochloro-chloro-ketiminohegahydrobenzene by reducing agents while avoiding hydrolysis, so that the nitrogen remains in the molecule.



  In a similar way, from pentachloro-p-chloroketiminotetrahydronaphthalene, like this one according to the Swiss method. Pa tentes 105644 is obtained, advantageously 1: 3: 4-trichloro-p-naphthylamine of the formula
EMI0001.0009
    represent. <I> Example: </I> 250 grams of calcined sodium sulfide are dissolved in hot alcohol, then the solution is filtered and cooled. The sodium sulphide which partially crystallizes out is left in the solution.

   Now, while keeping the temperature constant at <B> 30 '</B> C, 200 g of pentachloro-ss-chlorocetiminotetrahydronaphthalene are added in small portions to the solution. After the reaction has ended, the mixture is heated on the water bath for some time, then water is added to the solution and the amine is thereby precipitated. Any naphthol formed at the same time remains in solution. The precipitate is filtered off, dried and recrystallized from gasoline.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 1:3:4 Trichlor-ss-naphtylamin, dadurch gekennzeich net, dass man das im Schweiz. Patent 105644 beschriebene Pentachlor-p-chlorketirninotetra- hydronaphtalin unter Vermeidung von Hydro lyse mit Reduktionsmitteln behandelt, so dass der Stickstoff im Molekül verbleibt. PATENT CLAIM: Process for the preparation of 1: 3: 4 trichloro-ss-naphthylamine, characterized in that it is in Switzerland. Patent 105644 described pentachloro-p-chloroketirninotetra- hydronaphthalene treated with reducing agents while avoiding hydrolysis, so that the nitrogen remains in the molecule.
CH107785D 1922-06-03 1923-05-30 Process for the preparation of 1: 3: 4-trichloro-b-naphthylamine. CH107785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE107786X 1922-06-03
CH107393T 1923-05-30

Publications (1)

Publication Number Publication Date
CH107785A true CH107785A (en) 1924-11-17

Family

ID=25707187

Family Applications (4)

Application Number Title Priority Date Filing Date
CH107786D CH107786A (en) 1922-06-03 1923-05-30 Process for the preparation of 1: 3-dichloro-b-naphthylamine.
CH107784D CH107784A (en) 1922-06-03 1923-05-30 Process for preparing 2: 3: 4-trichloro-a-naphthylamine
CH107785D CH107785A (en) 1922-06-03 1923-05-30 Process for the preparation of 1: 3: 4-trichloro-b-naphthylamine.
CH107783D CH107783A (en) 1922-06-03 1923-05-30 Process for the preparation of 2: 3: 4: 6-tetrachloroaniline.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CH107786D CH107786A (en) 1922-06-03 1923-05-30 Process for the preparation of 1: 3-dichloro-b-naphthylamine.
CH107784D CH107784A (en) 1922-06-03 1923-05-30 Process for preparing 2: 3: 4-trichloro-a-naphthylamine

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH107783D CH107783A (en) 1922-06-03 1923-05-30 Process for the preparation of 2: 3: 4: 6-tetrachloroaniline.

Country Status (1)

Country Link
CH (4) CH107786A (en)

Also Published As

Publication number Publication date
CH107783A (en) 1924-11-17
CH107786A (en) 1924-11-17
CH107784A (en) 1924-11-17

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