CH127693A - Process for the preparation of a ring ketone. - Google Patents
Process for the preparation of a ring ketone.Info
- Publication number
- CH127693A CH127693A CH127693DA CH127693A CH 127693 A CH127693 A CH 127693A CH 127693D A CH127693D A CH 127693DA CH 127693 A CH127693 A CH 127693A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- ring ketone
- benzene
- ring
- ketone
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Ringketons. Gegenstand dieses Patentes ist ein Ver fahren zur Darstellung eines Ringketons von nachstehender Formel:
EMI0001.0003
welches dadurch gekennzeichnet ist, dass man P-Chlorbuttersäure mit Benzol und Alumi niumchlorid auf höhere Temperatur erhitzt.
Das Produkt soll zur Herstellung von Farbstoffen Verwendung finden.
Beispiel: Eine Lösung von 61 Gewichtsteilen ss-Chlorbuttersäure in 390 Gewichtsteilen Ben zol wird unter Rühren mit 134 Gewichts teilen gepulvertem Aluminiumchlorid langsam versetzt. Man steigert allmählich die Tem peratur bis zum Siedepunkt des Benzols und hält sie einige Stunden. Die Aufarbeitung kann so geschehen, dass man nach dem Ver setzen mit Eis und Salzsäure das Reaktions gemisch einer Wasserdampfdestillation unter wirft, wobei anfangs hauptsächlich nur das Benzol übergeht, später das flüssige Ringketon vom Siedepunkt 255 und nachstehender Formel
EMI0001.0011
Process for the preparation of a ring ketone. The subject of this patent is a process for the preparation of a ring ketone of the following formula:
EMI0001.0003
which is characterized in that P-chlorobutyric acid is heated to a higher temperature with benzene and aluminum chloride.
The product is intended to be used for the manufacture of dyes.
Example: A solution of 61 parts by weight of ß-chlorobutyric acid in 390 parts by weight of benzene is slowly mixed with 134 parts by weight of powdered aluminum chloride while stirring. The temperature is gradually increased to the boiling point of benzene and held for a few hours. The work-up can be done in such a way that, after setting with ice and hydrochloric acid, the reaction mixture is subjected to steam distillation, initially mainly only the benzene passes over, later the liquid ring ketone with boiling point 255 and the formula below
EMI0001.0011
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE127693X | 1926-03-26 | ||
CH126404T | 1927-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH127693A true CH127693A (en) | 1928-09-01 |
Family
ID=25710641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH127693D CH127693A (en) | 1926-03-26 | 1927-03-14 | Process for the preparation of a ring ketone. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH127693A (en) |
-
1927
- 1927-03-14 CH CH127693D patent/CH127693A/en unknown
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