PROCESS FOR PRODUCING SUBSTITUTED ANILINE DERIVATIVES
1. A process for the preparation of a substituted aniline of the formula see diagramm : EP0029123,P10,F1 where 1 or 2 CH groups in the aromatic ring which is free from amino groups can be replaced by nitrogen atoms, R**1, R**2 and R**3 may be identical or different and each is hydrogen, halogen, nit...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Patent |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | 1. A process for the preparation of a substituted aniline of the formula see diagramm : EP0029123,P10,F1 where 1 or 2 CH groups in the aromatic ring which is free from amino groups can be replaced by nitrogen atoms, R**1, R**2 and R**3 may be identical or different and each is hydrogen, halogen, nitro, cyano, trihalomethyl, C1-4 -alkoxy, C1-4 -alkymercapto, an aliphatic radical of 1 to 4 carbon atoms an aliphatic sulfonyl radical of 1 to 4 carbon atoms, an aliphatic sulfoxide radical of 1 to 4 carbon atoms or a carbalkoxy radical of 2 to 5 carbon atoms, and Q is oxygen or sulfur, by reacting a phenolic salt with an aromatic or heterocyclic halogen compound, wherein a compound of the formula see diagramm : EP0029123,P10,F2 where Q has the above meanings and Z is a metal cation, is reacted with a haloaromatic or halo-heterocyclic compound of the formula see diagramm : EP0029123,P10,F3 where X is halogen, R**1, R**2 and R**3 have the above meanings and 1 or 2 CH groups in the ring can be replaced by nitrogen atoms, in the presence of a crown ether as catalyst and of a polar aprotic solvent, at from 80 to 280 degrees C. |
---|