CH146433A - Process for the preparation of 2.3-aminonaphthoic acid methylanilide. - Google Patents
Process for the preparation of 2.3-aminonaphthoic acid methylanilide.Info
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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)
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) |
-
1929
- 1929-07-04 CH CH146433D patent/CH146433A/en unknown
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