CH215336A - Process for the preparation of an aminoarylsulfoxide. - Google Patents

Process for the preparation of an aminoarylsulfoxide.

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Publication number
CH215336A
CH215336A CH215336DA CH215336A CH 215336 A CH215336 A CH 215336A CH 215336D A CH215336D A CH 215336DA CH 215336 A CH215336 A CH 215336A
Authority
CH
Switzerland
Prior art keywords
sulfoxide
preparation
aminoarylsulfoxide
methylamine
tolulene
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 CH215336A publication Critical patent/CH215336A/en

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

Description

  

      Verfahren    zur Herstellung eines     Aminoarylsnlfogydes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Aminoaryl-          sulfoxydes,    dadurch gekennzeichnet, dass man       4,4'-Dichlordiphenylsulfoxyd    mit     Methylamin     umsetzt.  



  Das so erhaltene, bisher noch nicht be  kannte     4,4'-Di-methylaminodiphenylsulfoxyd          kristallisiert    aus     Tolulol    in farblosen Nadeln  vom Schmelzpunkt 149' C; es ist in Alkohol  leicht, in aromatischen     Kohlenwasserstoffen     schwerer löslich und soll als Zwischenprodukt  zur Herstellung von     Farbstoffen    und pharma  zeutischen Produkten     Verwendung        finden.     



       Beispiel:     100 Teile     4,4'-Dichlordiphenylsulfoxyd     werden mit 800 Teilen einer 30      /oigen    wäs  serigen     3lethylaminlösung    unter Zusatz von  etwas Kupfer und     Kupferoxydul    30 Stunden  auf<B>170</B>   C erhitzt. Nach dem Erkalten saugt  man das Reaktionsprodukt ab und wäscht    mit Wasser. Durch Lösen in 3,5     o/oiger        Salz-          säure    und Wiederfällen mit     Natronlauge        wird     es von etwa noch vorhandenem Ausgangs  material     befreit.  



      Process for the preparation of an aminoarylsnlfogydes. The present patent relates to a process for the preparation of an aminoaryl sulfoxide, characterized in that 4,4'-dichlorodiphenyl sulfoxide is reacted with methylamine.



  The 4,4'-dimethylaminodiphenylsulfoxide obtained in this way, not previously known, crystallizes from tolulene in colorless needles with a melting point of 149 ° C .; it is easily soluble in alcohol, sparingly soluble in aromatic hydrocarbons and is intended to be used as an intermediate in the manufacture of dyes and pharmaceutical products.



       Example: 100 parts of 4,4'-dichlorodiphenylsulfoxide are heated to <B> 170 </B> C for 30 hours with 800 parts of a 30% aqueous 3-methylamine solution with the addition of some copper and copper oxide. After cooling, the reaction product is filtered off with suction and washed with water. It is freed from any starting material that may still be present by dissolving it in 3.5% hydrochloric acid and reprecipitating it with sodium hydroxide solution.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Amino- arylsulfoxydes, dadurch gekennzeichnet, dass man 4,4'-Dichlordiphenylsulfoxyd mit Methyl- amin umsetzt. PATENT CLAIM: Process for the production of an aminoaryl sulfoxide, characterized in that 4,4'-dichlorodiphenyl sulfoxide is reacted with methylamine. Das so erhaltene 4,4'-Di-methylamino- diphenylsulfoxyd kristallisiert aus Tolulol in farblosen Nadeln vom Schmelzpunkt 149 C; es ist in Alkohol leicht, in aromatischen Kohlenwasserstoffen schwerer löslich und soll als Zwischenprodukt zur Herstellung von Farbstoffen und pharmazeutischen Produkten Verwendung finden. The 4,4'-dimethylaminodiphenyl sulfoxide thus obtained crystallizes from tolulene in colorless needles with a melting point of 149 ° C .; it is easily soluble in alcohol, less soluble in aromatic hydrocarbons and is said to be used as an intermediate product in the manufacture of dyes and pharmaceutical products.
CH215336D 1937-12-30 1938-12-27 Process for the preparation of an aminoarylsulfoxide. CH215336A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE215336X 1937-12-30
CH209640T 1938-12-27

Publications (1)

Publication Number Publication Date
CH215336A true CH215336A (en) 1941-06-15

Family

ID=25724742

Family Applications (1)

Application Number Title Priority Date Filing Date
CH215336D CH215336A (en) 1937-12-30 1938-12-27 Process for the preparation of an aminoarylsulfoxide.

Country Status (1)

Country Link
CH (1) CH215336A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560192A1 (en) * 1984-02-29 1985-08-30 Richter Gedeon Vegyeszet NITRAMINODIARYL SULFOXIDE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS AND PESTICIDES CONTAINING SAME

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560192A1 (en) * 1984-02-29 1985-08-30 Richter Gedeon Vegyeszet NITRAMINODIARYL SULFOXIDE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS AND PESTICIDES CONTAINING SAME

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