CH261815A - Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. - Google Patents

Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine.

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Publication number
CH261815A
CH261815A CH261815DA CH261815A CH 261815 A CH261815 A CH 261815A CH 261815D A CH261815D A CH 261815DA CH 261815 A CH261815 A CH 261815A
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CH
Switzerland
Prior art keywords
triazine
hydrogen
diamino
substituted
preparation
Prior art date
Application number
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German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH261815A publication Critical patent/CH261815A/en

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  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

  

  Verfahren zur Herstellung eines substituierten     2,4-Diamino-1,395-triazins.       Gegenstand vorliegenden Patentes bildet  ein Verfahren zur Herstellung eines neuen,  substituierten     2,4-Diamino-1,3,5-triazins.    Das  Verfahren ist dadurch gekennzeichnet, dass  man im     2-Amino-4-diäthylamino-6-halogen-          1,3,5-triazin    das Halogenatom mit reduzieren  den Mitteln, wie z. B. Jodwasserstoff, Zink  staub oder Wasserstoff in Gegenwart eines       Schwermetallkatalysators,    durch Wasserstoff  ersetzt.

   Die erhaltene neue Base, das     2-Amino-          4-diäthylamino-1,3,5-triazin,    bildet farblose,  glänzende Kristalle vom     Schmelzpunkt    1700.  Es soll als Heilmittel oder Zwischenprodukt  für Heilmittel verwendet werden.  



  <I>Beispiel:</I>  20,15 g scharf getrockneten und fein pul  verisierten     2-Amino-4-diäthylamino-6-chlor-          1,3,5-triazins    werden mit 2,8 g     Calciumoxyd     gut vermischt, in 200 cm-'     Dioxan    aufge  schlämmt und in Gegenwart eine     Pd-CaC03          Katalysators    unter Schütteln bei 25 bis 300  Wasserstoff eingeleitet, bis annähernd 2,24  Liter Wasserstoff     aufgenommen    worden sind.

    Nach     Abdestillieren    des Lösungsmittels wird  der Rückstand in Wasser gegossen und das  gebildete     2-Amino-4-diäthyl-amino-1,3,5-tri-          azin    durch     Laugenzusatz    gefällt. Durch Um  kristallisation aus heissem Wasser wird es ge  reinigt. Es bildet farblose, glänzende Kristalle    vom Schmelzpunkt 1700 und ist in Wasser  von 370 zu 0,4% mit neutraler Reaktion lös  lich. Sein Chlorhydrat, ebenfalls farblose,  glänzende Kristalle,     schmilzt    bei 155 bis 1560  und ist in Wasser leicht löslich. Als Reduk  tionsmittel kann ferner     Jodwasserstoff    oder  Zinkstaub verwendet werden.



  Process for the preparation of a substituted 2,4-diamino-1,395-triazine. The present patent forms a process for the preparation of a new, substituted 2,4-diamino-1,3,5-triazine. The process is characterized in that in 2-amino-4-diethylamino-6-halogen-1,3,5-triazine the halogen atom is reduced with the means, such as. B. hydrogen iodide, zinc dust or hydrogen in the presence of a heavy metal catalyst, replaced by hydrogen.

   The new base obtained, 2-amino-4-diethylamino-1,3,5-triazine, forms colorless, glossy crystals with a melting point of 1700. It is said to be used as a remedy or an intermediate for remedies.



  <I> Example: </I> 20.15 g of sharply dried and finely powdered 2-amino-4-diethylamino-6-chloro-1,3,5-triazines are mixed well with 2.8 g of calcium oxide, in 200 cm- 'Dioxane slurried and initiated in the presence of a Pd-CaCO 3 catalyst with shaking at 25 to 300 hydrogen until approximately 2.24 liters of hydrogen have been absorbed.

    After the solvent has been distilled off, the residue is poured into water and the 2-amino-4-diethylamino-1,3,5-triazine formed is precipitated by adding lye. It is purified by recrystallization from hot water. It forms colorless, shiny crystals with a melting point of 1700 and is 0.4% soluble in water of 370 with a neutral reaction. Its chlorine hydrate, also colorless, shiny crystals, melts between 155 and 1560 and is easily soluble in water. Hydrogen iodide or zinc dust can also be used as a reducing agent.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen, substituierten 3,4-Diamino-1,3,5-triazins, da durch gekennzeichnet, dass man im 2-Amino- 4-diäthylamino-6-halogen-1,3,5-triazin das Ha logenatom mit reduzierenden Mitteln durch Wasserstoff ersetzt. Die erhaltene neue Base, das 2-Amino-4-diäthylamino-1,3,5-triazin, bil det farblose, glänzende Kristalle vom Schmelz punkt 1700. UNTERANSPRÜCHE: 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man als Reduk tionsmittel Jodwasserstoff verwendet. 2. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man als reduzie rendes Mittel Zinkstaub verwendet. 3. PATENT CLAIM: A process for the preparation of a new, substituted 3,4-diamino-1,3,5-triazine, characterized in that the 2-amino-4-diethylamino-6-halogen-1,3,5-triazine Halogen atom replaced with reducing agents by hydrogen. The new base obtained, the 2-amino-4-diethylamino-1,3,5-triazine, forms colorless, glossy crystals with a melting point of 1700. SUBClaims: 1. Method according to claim, characterized in that one is used as a reducing agent Hydrogen iodide used. 2. The method according to claim, characterized in that zinc dust is used as the reducing agent. 3. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass man die Reduk tion mit Wasserstoff in Gegenwart eines Schwermetallkatalysators vornimmt. Process according to claim, characterized in that the reduction is carried out with hydrogen in the presence of a heavy metal catalyst.
CH261815D 1946-08-16 1946-08-16 Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine. CH261815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH252530T 1946-08-16
CH261815T 1946-08-16

Publications (1)

Publication Number Publication Date
CH261815A true CH261815A (en) 1949-05-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH261815D CH261815A (en) 1946-08-16 1946-08-16 Process for the preparation of a substituted 2,4-diamino-1,3,5-triazine.

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CH (1) CH261815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658894A (en) * 1953-11-10 Formoguanamemes and their

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658894A (en) * 1953-11-10 Formoguanamemes and their

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