CH147681A - Process for the preparation of an aminodiphenylamine derivative. - Google Patents
Process for the preparation of an aminodiphenylamine derivative.Info
- Publication number
- CH147681A CH147681A CH147681DA CH147681A CH 147681 A CH147681 A CH 147681A CH 147681D A CH147681D A CH 147681DA CH 147681 A CH147681 A CH 147681A
- Authority
- CH
- Switzerland
- Prior art keywords
- aminodiphenylamine
- derivative
- preparation
- parts
- chloronitrosobenzene
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Aminodiphenylaminderivates. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Aminodi- phenylaminderivates, dadurch gekennzeichnet, dass man p-Chlornitrosobenzol mit o-ChlorDitro- sobenzol kondensiert und das Kondensations produkt mit einem Reduktionsmittel behandelt.
Das erhaltene, bisher nicht bekannte 4'3 Dichlor-4-amino-dipheriylamirr schmilzt bei 60-610. Es soll als Zwischenprodukt zur Herstellung von Farbstoffen verwendet werden. Beispiel: Je 57 Teile p- Chlorrritrosobenzol mit o- Chlornitrosobenzol werden zusammen in 500 Teilen Eisessig gelöst und in 1800 Teile Schwefelsäure von<B>66'</B> B6 bei<B>5-100</B> in 11s Stunden eintropfen gelassen. Die klare.
Lösung wird in Eiswasser ausgegossen, die gelbe Fällung abgesaugt, gewaschen (Schmelz punkt des gelben Körpers 139-140 ) und in etwa 3000 Volumteilen verdünnter Natron lauge gelöst. Die vom geringen braunen Rück- stand abfiltrierte klare, tiefrote Lösung wird rnit einer Lösung von 145 Teilen geschmol zenem Schwefelnatrium in Wasser versetzt und langsam auf 80 erwärmt, wobei das Reduktionsprodukt ölig ausfällt, nach Erkalten und Impfen aber rasch erstarrt. Es kann durch Kristallisation des schwefelsauren Salzes gereinigt werden.
Process for the preparation of an aminodiphenylamine derivative. The present patent relates to a process for the preparation of an aminodiphenylamine derivative, characterized in that p-chloronitrosobenzene is condensed with o-chloroditrousobenzene and the condensation product is treated with a reducing agent.
The previously unknown 4'3 dichloro-4-amino-dipheriylamirr obtained melts at 60-610. It is intended to be used as an intermediate in the manufacture of dyes. Example: 57 parts of p-chloro-ritrosobenzene with o-chloronitrosobenzene are dissolved together in 500 parts of glacial acetic acid and added dropwise to 1800 parts of sulfuric acid of <B> 66 '</B> B6 at <B> 5-100 </B> in 11s hours calmly. The clear one.
The solution is poured into ice water, the yellow precipitate is filtered off with suction, washed (melting point of the yellow body 139-140) and dissolved in about 3000 parts by volume of dilute sodium hydroxide solution. The clear, deep red solution filtered off from the small brown residue is mixed with a solution of 145 parts of molten sodium sulphide in water and slowly warmed to 80, the reduction product precipitating out as an oily product, but solidifying quickly after cooling and seeding. It can be purified by crystallizing the sulfuric acid salt.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE147681X | 1928-10-09 | ||
| CH145992T | 1929-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH147681A true CH147681A (en) | 1931-06-15 |
Family
ID=25714772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH147681D CH147681A (en) | 1928-10-09 | 1929-09-20 | Process for the preparation of an aminodiphenylamine derivative. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH147681A (en) |
-
1929
- 1929-09-20 CH CH147681D patent/CH147681A/en unknown
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