DE370222C - Process for the preparation of tetraoxyquinone - Google Patents

Process for the preparation of tetraoxyquinone

Info

Publication number
DE370222C
DE370222C DEF49944D DEF0049944D DE370222C DE 370222 C DE370222 C DE 370222C DE F49944 D DEF49944 D DE F49944D DE F0049944 D DEF0049944 D DE F0049944D DE 370222 C DE370222 C DE 370222C
Authority
DE
Germany
Prior art keywords
tetraoxyquinone
preparation
magnesium oxide
parts
alkalis
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
DEF49944D
Other languages
German (de)
Inventor
Dr Benno Homolka
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Priority to DEF49944D priority Critical patent/DE370222C/en
Application granted granted Critical
Publication of DE370222C publication Critical patent/DE370222C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C50/00—Quinones
    • C07C50/26—Quinones containing groups having oxygen atoms singly bound to carbon atoms
    • C07C50/28—Quinones containing groups having oxygen atoms singly bound to carbon atoms with monocyclic quinoid structure
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00—Preparation of quinones
    • C07C46/02—Preparation of quinones by oxidation giving rise to quinoid structures

Description

Verfahren zur Darstellung von Tetraoxychinon. Im Hauptpatent 3687:i1 ist gezeigt, daß Inatl durch Einwirkung von kohlensauren Alkalien auf Alkaliglvoxalbisrtlfitverbindungen Tetraoxvchinon erhält. Es wurde nunmehr gefunden, daß man hierbei die kohlensauren Alkalien zweckmäßig durch llagnesiumoxyd ersetzen kann.Process for the preparation of tetraoxyquinone. In main patent 3687: i1 it has been shown that inatl is produced by the action of carbonate alkalis on alkali-voxal bisrtilite compounds Tetraoxvquinone receives. It has now been found that the carbonic acid Can expediently replace alkalis with magnesium oxide.

Beispiel: In eine Lösung von 3oo Gewichtsteilen Glvoxalnatriumltisulfit in etwa .4 ooo Teilen Wasser trägt man unter Umrühren 8o Gewichtsteile Magnesiumoxyd ein. Das Gemen,e färbt sich rasch gelb, nach wenigen 'Minuten rot und im Verlauf von etwa 3 bis ; Stunden schwarzviolett. Man bringt nun den dunklen Niederschlag auf ein Filter, wäscht ihn mit siedendem Wasser aus und trägt ihn unter Umrühren in überschüssige verdünnte Salzsäure ein, wobei sich das Tetraoxvchinon in `rroßen, glänzenden, blauschwarzen Kristallen ausscheidet. Man bringt diese auf ein Filter, wäscht und trocknet.Example: In a solution of 300 parts by weight of Glvoxalnatriumltisulfit 80 parts by weight of magnesium oxide are carried in about .4,000 parts of water with stirring a. The mixture quickly turns yellow, after a few minutes red, and as it progresses from about 3 to; Hours black purple. Now bring the dark precipitate on a filter, wash it out with boiling water and carry it while stirring in excess dilute hydrochloric acid, whereby the tetraoxyquinone becomes large, shiny, blue-black crystals. You put this on a filter, washes and dries.

Claims (1)

PATENT-ANsPRUcH: Abänderung des durch Patent 368741 geschützten Verfahrens zur Darstellung von Tetraoxychinon, darin bestehend, daß man auf Glyoxal Magnesiumoxyd an Stelle der kohlensauren Alkalien zur Ein-, Wirkung bringt.PATENT CLAIM: Modification of the process protected by patent 368741 for the preparation of tetraoxyquinone, consisting in that on glyoxal magnesium oxide in place of the carbonic acid alkalis brings about an effect.
DEF49944D 1921-08-16 1921-08-16 Process for the preparation of tetraoxyquinone Expired DE370222C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF49944D DE370222C (en) 1921-08-16 1921-08-16 Process for the preparation of tetraoxyquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF49944D DE370222C (en) 1921-08-16 1921-08-16 Process for the preparation of tetraoxyquinone

Publications (1)

Publication Number Publication Date
DE370222C true DE370222C (en) 1923-02-28

Family

ID=7103399

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF49944D Expired DE370222C (en) 1921-08-16 1921-08-16 Process for the preparation of tetraoxyquinone

Country Status (1)

Country Link
DE (1) DE370222C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416570B2 (en) 2000-03-02 2002-07-09 Toyo Boseki Kabushiki Kaisha Integrally molded type filter unit and manufacture of the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416570B2 (en) 2000-03-02 2002-07-09 Toyo Boseki Kabushiki Kaisha Integrally molded type filter unit and manufacture of the same

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