DE805400C - Process for the production of dinitrophenyl ethers - Google Patents

Process for the production of dinitrophenyl ethers

Info

Publication number
DE805400C
DE805400C DEP1721A DEP0001721A DE805400C DE 805400 C DE805400 C DE 805400C DE P1721 A DEP1721 A DE P1721A DE P0001721 A DEP0001721 A DE P0001721A DE 805400 C DE805400 C DE 805400C
Authority
DE
Germany
Prior art keywords
production
dinitrochlorobenzene
lye
dinitrophenyl ethers
dinitrophenyl
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
DEP1721A
Other languages
German (de)
Inventor
Dr Johann Sixt
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.)
HEINZ HAURY CHEM FAB
Original Assignee
HEINZ HAURY CHEM FAB
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 HEINZ HAURY CHEM FAB filed Critical HEINZ HAURY CHEM FAB
Priority to DEP1721A priority Critical patent/DE805400C/en
Application granted granted Critical
Publication of DE805400C publication Critical patent/DE805400C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups

Landscapes

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

Description

Verfahren zur Herstellung von Dinitrophenyläthern Es ist bekannt, Dinitropheneläther aus Dinitrochlorbenzol durch Einwirkung alkoholischer Laugen herzustellen, indem diese Laugen mit Lösungen von Dinitrochlorbenzol in dem Alkohol, dessen Äther darzustellen beabsichtigt ist, bei gewöhnlicher Temperatur zur Reaktion gebracht werden. Die Geschwindigkeit der Reaktion ist aber, wenn sie auch sofort einsetzt, nicht sehr groß; es dauert vielmehr viele Stunden, bis das jeweils zugefügte Alkali völlig verbraucht ist, so daß der gebildete Äther wieder zum Teil verseift wird.Process for the preparation of dinitrophenyl ethers It is known Dinitrophenel ether made from dinitrochlorobenzene through the action of alcoholic alkalis by mixing these alkalis with solutions of dinitrochlorobenzene in the alcohol, the ether of which is intended to be represented, to react at ordinary temperature to be brought. The speed of the response, though, is instant if too sets in, not very big; Rather, it takes many hours to add something Alkali is completely used up, so that the ether formed is partially saponified again will.

Es wurde nun gefunden, daß die Herstellung der Äther mit ausgezeichneter Ausbeute bei gleichzeitig sehr großer Geschwindigkeit gelingt. wenn die Lauge langsam auf die heiße alkoholische Dinitrochlorbenzollösung nach Maßgabe des Verbrauches der zugefügten Lauge zur Einwirkung gebracht wird. Diese Wirkung ist sehr überraschend, da bei Mononitrochlorbenzolen die Anwendung höherer Temperaturen wegen der dabei beobachteten Bildung unerwünschter Nebenprodukte für sehr schädlich gilt.It has now been found that the production of the ether with excellent Yield succeeds at very high speed at the same time. when the lye is slow on the hot alcoholic dinitrochlorobenzene solution according to consumption the added alkali is brought into action. This effect is very surprising as with mononitrochlorobenzenes the use of higher temperatures very harmful because of the observed formation of undesired by-products is applicable.

Bei dem neuen Verfahren werden Temperaturen von 6o0 aufwärts eingehalten. Beispiel o,5 Mol Dinitrochlorbenzol wurden in 5oo ccm Äthylalkohol gelöst und bei 6o' allmählich unter Rühren mit einer Lösung von 2o g Ätznatron in Äthylalkohol versetzt. Die Reaktion war nach etwa 5 Minuten beendigt. Die Aufarbeitung der Reaktionsmischung erfolgte in bekannter Weise durch Kristallisation nach Abdampfung eines Teiles des Alkohols. Die Ausbeute betrug etwa 9301l, der Theorie.With the new method, temperatures of 60 ° and above are maintained. Example o, 5 moles of dinitrochlorobenzene were dissolved in 5oo ccm of ethyl alcohol and 6o 'gradually with stirring with a solution of 2o g of caustic soda in ethyl alcohol offset. The reaction was complete in about 5 minutes. Working up the reaction mixture took place in a known manner by crystallization after evaporation of part of the Alcohol. The yield was about 9,301 liters of theory.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Dinitrophenyläthern aus Dinitrochlorbenzol und alkoholischer Lauge, dadurch gekennzeichnet, daß die Lauge langsam auf die heiße alkoholische Dinitrochlorbenzollösung nach Maßgabe des Verbrauches der zugefügten Lauge zur Einwirkung gebracht wird. PATENT CLAIM: Process for the production of dinitrophenyl ethers from dinitrochlorobenzene and alcoholic lye, characterized in that the lye is slowly brought into action on the hot alcoholic dinitrochlorobenzene solution according to the consumption of the added lye.
DEP1721A 1948-10-02 1948-10-02 Process for the production of dinitrophenyl ethers Expired DE805400C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP1721A DE805400C (en) 1948-10-02 1948-10-02 Process for the production of dinitrophenyl ethers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1721A DE805400C (en) 1948-10-02 1948-10-02 Process for the production of dinitrophenyl ethers

Publications (1)

Publication Number Publication Date
DE805400C true DE805400C (en) 1951-05-17

Family

ID=7357432

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP1721A Expired DE805400C (en) 1948-10-02 1948-10-02 Process for the production of dinitrophenyl ethers

Country Status (1)

Country Link
DE (1) DE805400C (en)

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