DE553538C - Process for the preparation of 2-oxyanthracene-3-carboxylic acid - Google Patents

Process for the preparation of 2-oxyanthracene-3-carboxylic acid

Info

Publication number
DE553538C
DE553538C DE1930553538D DE553538DD DE553538C DE 553538 C DE553538 C DE 553538C DE 1930553538 D DE1930553538 D DE 1930553538D DE 553538D D DE553538D D DE 553538DD DE 553538 C DE553538 C DE 553538C
Authority
DE
Germany
Prior art keywords
oxyanthracene
carboxylic acid
preparation
carbonic acid
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1930553538D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of DE553538C publication Critical patent/DE553538C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
    • C07C65/105—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups polycyclic
    • C07C65/15—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups polycyclic with carboxyl groups on a condensed ring system containing more than two rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Es wurde gefunden, daß man durch Einwirkung von Kohlensäure unter Druck bei erhöhter Temperatur auf die Alkalisalze des 2-Oxyanthracens oder auf die freie Oxyverbindung bei Gegenwart von Alkalicarbonaten zu der bisher noch unbekannten 2-Oxyanthracen-3-carbonsäure gelangt. Sie stellt ein wertvolles Zwischenprodukt für Farbstoffe dar.It has been found that by the action of carbonic acid under pressure at increased Temperature on the alkali salts of 2-oxyanthracene or on the free oxy compound in the presence of alkali carbonates to form the as yet unknown 2-oxyanthracene-3-carboxylic acid got. It is a valuable intermediate for dyes.

Beispiel 1example 1

Das Kaliumsalz des 2-Oxyanthracens wird bei einem Kohlensäuredruck von 60 Atm. 9 Stunden auf 2600 erhitzt. Aus dem Reak-The potassium salt of 2-oxyanthracene is at a carbonic acid pressure of 60 atm. Heated to 260 0 for 9 hours. From the Rea-

1S tionsprodukt wird nach dem Neutralisieren das schwer lösliche Kaliumsalz mit heißem Wasser extrahiert. Aus dem Filtrat fällt beim Ansäuern die 2-Oxyanthracen-3-carbonsäure. Sie stellt ein gelborange gefärbtes Pulver dar. Aus Eisessig oder Dichlorbenzol kristallisiert sie in rhombischen Blättchen. Der Zersetzungspunkt liegt bei 295 °.The sparingly soluble potassium salt is tion product 1 S extracted with hot water after neutralization. On acidification, the 2-oxyanthracene-3-carboxylic acid falls from the filtrate. It is a yellow-orange colored powder. From glacial acetic acid or dichlorobenzene, it crystallizes in rhombic flakes. The decomposition point is 295 °.

In obigem Beispiel können Druck und Temperatur in weiten Grenzen variiert werden. *5In the above example, pressure and temperature can be varied within wide limits. * 5

Beispiel 2Example 2

Ein Gemisch von 1 Gewichtsteil 2-0xyanthracen mit 3 Gewichtsteilen Pottasche wird bei einem Kohlensäuredruck von 80 Atm. Stunden auf 220 bis 2300 erhitzt. Das Reaktionsprodukt wird wie bei Beispiel 1 aufgearbeitet.A mixture of 1 part by weight of 2-oxyanthracene with 3 parts by weight of potash is at a carbonic acid pressure of 80 atm. Heated to 220 to 230 0 hours. The reaction product is worked up as in Example 1.

Claims (1)

Patentanspruch:Claim: Verfahren zur Darstellung der e-Oxyanthracen-3-carbonsäure, darin bestehend, daß man auf die Alkalisalze des 2-Oxyanthracene oder ,auf die freie Oxyverbindung bei Gegenwart von Alkalicarbonaten Kohlensäure unter Druck bei höherer Temperatur einwirken läßt.Process for the preparation of e-oxyanthracene-3-carboxylic acid, consisting in that one on the alkali salts of 2-oxyanthracene or on the free oxy compound in the presence of alkali carbonates carbonic acid under pressure at higher Let the temperature act.
DE1930553538D 1930-10-20 1930-12-19 Process for the preparation of 2-oxyanthracene-3-carboxylic acid Expired DE553538C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE724123X 1930-10-20

Publications (1)

Publication Number Publication Date
DE553538C true DE553538C (en) 1932-06-27

Family

ID=6633806

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930553538D Expired DE553538C (en) 1930-10-20 1930-12-19 Process for the preparation of 2-oxyanthracene-3-carboxylic acid

Country Status (2)

Country Link
DE (1) DE553538C (en)
FR (1) FR724123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2053020A1 (en) * 1969-06-25 1971-04-16 Merck & Co Inc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2053020A1 (en) * 1969-06-25 1971-04-16 Merck & Co Inc

Also Published As

Publication number Publication date
FR724123A (en) 1932-04-22

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