CH147684A - Process for the preparation of an aminodiphenylamine derivative. - Google Patents
Process for the preparation of an aminodiphenylamine derivative.Info
- Publication number
- CH147684A CH147684A CH147684DA CH147684A CH 147684 A CH147684 A CH 147684A CH 147684D A CH147684D A CH 147684DA CH 147684 A CH147684 A CH 147684A
- Authority
- CH
- Switzerland
- Prior art keywords
- aminodiphenylamine
- derivative
- preparation
- parts
- chloronitrosobenzene
- Prior art date
Links
Description
Verfahren zur Herstellung eines Aminodiphenylaminderivates. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Aminodiphe- nylaminderivates, dadurchgekennzeichnet, dass man p-Nitrosotoluol mit o-Chlornitrosobenzol kondensiert und das Kondensationsprodukt mit einem Reduktionsmittel behandelt.
Das erhaltene, bisher nicht bekannte 4'- Methyl-3-chlor-4-aminodiphenylamin hat den Schmelzpunkt 71-720. Es soll als Zwischen produkt zur Herstellung von Farbstoffen ver wendet werden.
<I>Beispiel:</I> 48 Teile p-Nitrosotoluol und 56 Teile o-Chlornitrosobenzol werden zusammen ge schmolzen und noch warm in 1200 Teile Schwefelsäure von<B>600</B> B6 bei 5 eintropfen gelassen. Es wird dann in Eiswasser gegossen, die bräunliche Fällung abgesaugt, gewaschen, in 3000 Volumteilen verdünnter Natronlauge gelöst und von geringem Rückstand abfiltriert. Die klare, tiefrote Lösung wird mit 145 Teilen geschmolzenem Schwefelnatrium in Wasser gelöst, versetzt und langsam auf 80 erwärmt, wobei das Reduktionsprodukt ölig ausfällt, aber beim Kühlen erstarrt.
Die Base kann durch Kristallisation des schwefelsatarenSalzes gereinigt werden.
Process for the preparation of an aminodiphenylamine derivative. The present patent relates to a process for the production of an aminodiphenylamine derivative, characterized in that p-nitrosotoluene is condensed with o-chloronitrosobenzene and the condensation product is treated with a reducing agent.
The previously unknown 4'-methyl-3-chloro-4-aminodiphenylamine obtained has a melting point of 71-720. It is intended to be used as an intermediate in the manufacture of dyes.
<I> Example: </I> 48 parts of p-nitrosotoluene and 56 parts of o-chloronitrosobenzene are melted together and allowed to drip into 1200 parts of sulfuric acid of <B> 600 </B> B6 at 5 while still warm. It is then poured into ice water, the brownish precipitate is filtered off with suction, washed, dissolved in 3000 parts by volume of dilute sodium hydroxide solution and small amounts of residue are filtered off. The clear, deep red solution is dissolved in water with 145 parts of molten sodium sulfur, added and slowly heated to 80, the reduction product precipitating out as an oily product, but solidifying on cooling.
The base can be purified by crystallization of the sulfur sulphate.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE147684X | 1928-10-09 | ||
| CH145992T | 1929-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH147684A true CH147684A (en) | 1931-06-15 |
Family
ID=25714775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH147684D CH147684A (en) | 1928-10-09 | 1929-09-20 | Process for the preparation of an aminodiphenylamine derivative. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH147684A (en) |
-
1929
- 1929-09-20 CH CH147684D patent/CH147684A/en unknown
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