CH146433A - Process for the preparation of 2.3-aminonaphthoic acid methylanilide. - Google Patents

Process for the preparation of 2.3-aminonaphthoic acid methylanilide.

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Publication number
CH146433A
CH146433A CH146433DA CH146433A CH 146433 A CH146433 A CH 146433A CH 146433D A CH146433D A CH 146433DA CH 146433 A CH146433 A CH 146433A
Authority
CH
Switzerland
Prior art keywords
preparation
methylanilide
aminonaphthoic acid
aminonaphthoic
acid methylanilide
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 CH146433A publication Critical patent/CH146433A/en

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Description

  

  Verfahren zur Darstellung von 2 .     3-Aminonaphtoesäure-methylauilid.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung von 2 .     3-Aminonaph-          toesäure-methylanilid,    welches dadurch ge  kennzeichnet ist, dass man auf     2.3-Napht-          isatosäureanhydrid        Monomethylanilin    einwir  ken lässt. Das neue Produkt soll als Aus  gangsmaterial für die Herstellung von Farb  stoffen und pharmazeutischen Produkten Ver  wendung finden.  



  <I>Beispiel:</I>  100 Gewichtsteile     2.3-Naphtisatosäure-          anhydrid    werden mit 150 Gewichtsteilen       Monomethylanilin    zweckmässig auf zirka 80   C  unter Rühren so lange erwärmt, bis die       Kohlensäureentwicklung    beendet ist. Nach  12stündigem Stehen in der Kälte wird der  gebildete Kristallbrei abgesaugt, mit kaltem  Methylalkohol nachgewaschen und getrocknet.         2.3-Aminonaphtoesäure-methylanilid    kri  stallisiert. aus     Pyridin    in derben, schwach  gelben Nadeln vom Schmelzpunkt 165   C.



  Procedure for the representation of 2. 3-aminonaphthoic acid methylauilide. The subject of this patent is a method for representing FIG. 3-aminonaphthoic acid methylanilide, which is characterized in that monomethylaniline is allowed to act on 2,3-naphthoic acid anhydride. The new product is to be used as a raw material for the manufacture of dyes and pharmaceutical products.



  <I> Example: </I> 100 parts by weight of 2,3-naphthisatoic anhydride are expediently heated with 150 parts by weight of monomethylaniline to around 80 ° C. with stirring until the evolution of carbonic acid has ended. After standing in the cold for 12 hours, the crystal slurry formed is filtered off with suction, washed with cold methyl alcohol and dried. 2.3-aminonaphthoic acid methylanilide crystallized. from pyridine in coarse, pale yellow needles with a melting point of 165 C.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 2 . 3-Amirio- naphtoesäuremethylanilid, dadurch gekenn zeichnet, dass man auf 2.3-Naphtisatosäure- anhydrid Monomethylanilin einwirken lässt. Das so erhaltene 2 . 3-Aminonaphtoesäure- methylanilid kristallisiert aus Pyridin in derben, schwach gelben Nadeln vom Schmelz punkt 165 C. Es soll als Ausgangsmaterial für die Herstellung von Farbstoffen und pharmazeutischen Produkten Verwendung finden. PATENT CLAIM: Method for the representation of 2. 3-Amirionnaphthoesäuremethylanilid, characterized in that one lets act on 2,3-Naphthisato anhydride monomethylaniline. The 2nd 3-aminonaphthoic acid methylanilide crystallizes from pyridine in coarse, pale yellow needles with a melting point of 165 C. It is said to be used as a starting material for the manufacture of dyes and pharmaceutical products.
CH146433D 1928-07-14 1929-07-04 Process for the preparation of 2.3-aminonaphthoic acid methylanilide. CH146433A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE146433X 1928-07-14
CH144858T 1929-07-04

Publications (1)

Publication Number Publication Date
CH146433A true CH146433A (en) 1931-04-15

Family

ID=25714542

Family Applications (1)

Application Number Title Priority Date Filing Date
CH146433D CH146433A (en) 1928-07-14 1929-07-04 Process for the preparation of 2.3-aminonaphthoic acid methylanilide.

Country Status (1)

Country Link
CH (1) CH146433A (en)

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