AT34243B - Process for the preparation of CC dialkylbarbituric acids. - Google Patents

Process for the preparation of CC dialkylbarbituric acids.

Info

Publication number
AT34243B
AT34243B AT34243DA AT34243B AT 34243 B AT34243 B AT 34243B AT 34243D A AT34243D A AT 34243DA AT 34243 B AT34243 B AT 34243B
Authority
AT
Austria
Prior art keywords
preparation
dialkylbarbituric acids
dialkylbarbituric
acids
condensation products
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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 Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT34243B publication Critical patent/AT34243B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

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 Wasser werden grosse Kristalle von reiner Diäthylbarbitursäure erhalten. 



   Beispiel   4 : 10   Teile des Kondensationsprodukts von Diäthylmalonitril mit Guanylharnstoff werden 4 Stunden mit 350 Teilen Salpetersäure (50prozentig) am Rückflusskühler gekocht. Die dal) ei entstehende Diäthylbarbitursäure wird mit Äther ausgeschüttelt und durch Umkristallisieren aus Wasser rein erhalten.



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 Water, large crystals of pure diethylbarbituric acid are obtained.



   Example 4: 10 parts of the condensation product of diethyl malonitrile with guanylurea are refluxed for 4 hours with 350 parts of nitric acid (50 percent). The resulting diethylbarbituric acid is extracted with ether and obtained pure by recrystallization from water.

Claims (1)

PATENT. ANSPRUCH : Weitere Ausbildung des durch das Stamm-Patent geschützten Verfahrens zur Darstellung von CC-Dialkylbarbitursäuren, darin bestehend, dass man statt, der dort verwendeten Kondensationsprodukte aus Dicyandiamid hier die entsprechenden Kondensationsprodukte aus Guanvl- EMI2.2 PATENT. CLAIM : Further development of the process for the preparation of CC dialkylbarbituric acids, which is protected by the parent patent, consists in that instead of the condensation products from dicyandiamide used there, the corresponding condensation products from Guanvl EMI2.2
AT34243D 1904-03-18 1906-02-03 Process for the preparation of CC dialkylbarbituric acids. AT34243B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE165223D 1904-03-18
DE187990D 1904-10-19

Publications (1)

Publication Number Publication Date
AT34243B true AT34243B (en) 1908-09-10

Family

ID=25754169

Family Applications (1)

Application Number Title Priority Date Filing Date
AT34243D AT34243B (en) 1904-03-18 1906-02-03 Process for the preparation of CC dialkylbarbituric acids.

Country Status (1)

Country Link
AT (1) AT34243B (en)

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