CH361573A - Process for the preparation of new 5-aminomethyl-pyrimidines - Google Patents

Process for the preparation of new 5-aminomethyl-pyrimidines

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Publication number
CH361573A
CH361573A CH361573DA CH361573A CH 361573 A CH361573 A CH 361573A CH 361573D A CH361573D A CH 361573DA CH 361573 A CH361573 A CH 361573A
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CH
Switzerland
Prior art keywords
aminomethyl
new
pyrimidines
preparation
slightly soluble
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German (de)
Inventor
Habicht Ernst Dr Phil
Original Assignee
Cilag Chemie Aktiengesellschaf
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Publication date
Application filed by Cilag Chemie Aktiengesellschaf filed Critical Cilag Chemie Aktiengesellschaf
Publication of CH361573A publication Critical patent/CH361573A/en

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  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

  Verfahren zur Herstellung neuer     5-Aminomethyl-pyrimidine       Das vorliegende Patent bezieht sich auf ein Ver  fahren zur Herstellung neuer     5-Aminomethyl-pyri-          midine    der Formel  
EMI0001.0004     
    in welcher     R1    .eine durch ein oder zwei     aliphatische,          araliphatische,    aromatische oder     heterocyclische     Reste substituierte     NH.-    Gruppe oder die     Pyrrolidino-          oder        Piperidinogruppe,

          R2        NH2    oder     Hydroxyl    und       R,    Wasserstoff oder niederes     Alkyl    darstellen; die  neuen 5     Aminomethylpyrimidine    sind wertvolle Zwi  schenprodukte zur Herstellung von Schädlings  bekämpfungsmitteln.  



  Die neuen 5     Aminomethyl-pyrimidine    werden  erfindungsgemäss hergestellt durch Reduktion eines       5-Cyan-pyrimidins    der Formel  
EMI0001.0021     
    Die Reduktion kann beispielsweise mit Hilfe von       Lithiumaluminiumhydrid,    mit     Chromosalzen    oder  mit Hilfe von     Raney-Nickel    und Wasserstoff durch  geführt werden; im letzteren Falle arbeitet man  vorzugsweise in     alkoholischjammoniakalischer    Lö  sung.  



  Die Herstellung der     5-Cyan-pyrimidine    der For  mel     II    ist in der Schweiz. Patentschrift Nr. 358426  beschrieben.    <I>Beispiel 1</I>  15 g 2-(y     Diäthylamino-propylamino)-4-amino-          5-cyan-pyrimidin    werden in 300     cm3        abs..    mit     NH3     gesättigtem Methanol     in    Gegenwart von     Raney-          Nickel    bei 80  C und 85     at.        Wasserstoffdruck   <B>hy-</B>  driert.

   Nach dem Absaugen des Katalysators wird  das     Filtrat    im Vakuum verdampft und der Rück  stand in 2n Salzsäure gelöst. Diese Lösung wird  mit einigen Kubikzentimetern     Ammoniumsulfidlösung     versetzt, um komplexe     Nickelverbindungen    zu ent  fernen. Nach dem Versetzen mit Kohle     wird        filtriert     und das     Filtrat    im Vakuum zur Trockne verdampft.

    Der Rückstand,     bestehend    aus dem     Trihydrochlorid     des 2 - (y -     Diäthylamino    -     propylamino)    - 4 -     amino-5-          ammomethyl-pyrimidins,    wird aus einer Mischung  von     abs.    Äthanol und     Essigsäureäthylester    einige  Male umkristallisiert.

   Das so     erhaltene        Trihydio-          chlorid-monohydrat    schmilzt bei 115-118  C und       wird        in        einer        Ausbeute        von        40-50%        d..        Th.        gewon-          nen.     



  <I>Beispiel 2</I>  7,7 g     Lithiumaluminiumhydrid    werden     in    100     cm3          abs.        Tetrahydrofuran        suspendiert.    Zu dieser Suspen  sion     wird    unter Rühren eine Lösung von 13 g     2-(n-          Hexylamino)-4-amino-5-cyan-pyrimidin    in 150     cm3          Tetrahydrofuran        eintropfen    gelassen. Nach 2 Stun  den erhitzt man noch 11/2 Stunden zum Sieden; kühlt  dann ab und versetzt vorsichtig     mit    Wasser- und  Natronlauge.

   Der entstandene     dicke    Brei wird durch       .Celit     abgesaugt und das Filtrat im Vakuum ein  gedampft. Der Rückstand     wird    mit 2n Essigsäure  behandelt, die     unlöslichen        Teile    werden     abfiltriert     und das Filtrat auf     pH    10 gestellt. Man extrahiert  mit Chloroform, trocknet die     Chloroformschicht    und  verdampft.

   Der Rückstand wird mit Aceton und       konz.        Salzsäure    in der Kälte behandelt, wodurch  das     Dihydrochlorid    des 2-(n-Hexylamino)-4-amino-           5-aminomethyl-pyrimidin    in     farblosen    Kristallen  anfällt. Nach dem     Umkristallisieren    aus     abs.        Me-          thanol/Äther    schmilzt das     Dihydrochlorid    bei 202  bis 204  C unter Zersetzung.  



  In der gleichen Weise, wie in Beispiel 1 und 2  beschrieben, lassen sich aus den entsprechenden       5-Cyanverbindungen    die folgenden     5-Aminomethyl-          4-amino-pyrimidine    gewinnen:       2-(ss        Diäthylaminoäthylamino)-Verbindlung:          Schmp.    des     Trihydrochlorides:    198-201  C;  leicht löslich in Wasser, Methanol und Äthanol,  wenig     löslich    in Aceton;       2-Benzylamino-Verbindung:          Schmp.    des     Dihydrochlorid-monohydrates:    196  bis 198  C; leicht löslich in Wasser und Methanol,  wenig löslich in Äthanol;

         2-Cyclohexylamino-Verbindung:          Schmp.    des     Monohydrochlorides:    201-203  C;  leicht löslich in Wasser und Methanol, weniger  löslich in Äthanol;       2-Piperidino-Verbindung:          Schmp.    des     Dihydrochlorid-monohydrates:    232  bis 235  C Zersetzung; leicht löslich in Wasser  und Methanol, wenig löslich in Aceton;       2-Pyrrolidlno-Verbindung:          Schmp.    des     Dihydrochlorid-monohydrates:    263  bis 268  C Zersetzung; leicht löslich in Wasser  und Methanol, wenig löslich in Aceton;

           2-Anilino-Verbindung:          Schmp.    des     Dihydrochlorid-monohydrates:    220  bis 223  C Zersetzung; leicht löslich in Wasser  und Methanol, wenig löslich in Aceton.



  Process for the preparation of new 5-aminomethyl-pyrimidines The present patent relates to a process for the preparation of new 5-aminomethyl-pyrimidines of the formula
EMI0001.0004
    in which R1. an NH group substituted by one or two aliphatic, araliphatic, aromatic or heterocyclic radicals or the pyrrolidino or piperidino group,

          R2 represents NH2 or hydroxyl and R represents hydrogen or lower alkyl; the new 5 aminomethylpyrimidines are valuable inter mediate products for the manufacture of pesticides.



  The new 5 aminomethyl-pyrimidines are prepared according to the invention by reducing a 5-cyano-pyrimidine of the formula
EMI0001.0021
    The reduction can for example be carried out with the aid of lithium aluminum hydride, with chromium salts or with the aid of Raney nickel and hydrogen; in the latter case one works preferably in an alcoholic ammonia solution.



  The production of the 5-cyano-pyrimidines of the formula II is in Switzerland. Patent No. 358426. <I> Example 1 </I> 15 g of 2- (y diethylamino-propylamino) -4-amino-5-cyano-pyrimidine are dissolved in 300 cm3 abs .. methanol saturated with NH3 in the presence of Raney nickel at 80 ° C. and 85 at. Hydrogen pressure <B> hydrated </B>.

   After the catalyst has been filtered off with suction, the filtrate is evaporated in vacuo and the residue is dissolved in 2N hydrochloric acid. A few cubic centimeters of ammonium sulfide solution is added to this solution to remove complex nickel compounds. After adding charcoal, it is filtered and the filtrate is evaporated to dryness in vacuo.

    The residue, consisting of the trihydrochloride of 2 - (γ-diethylamino-propylamino) -4-amino-5-ammomethyl-pyrimidine, is made from a mixture of abs. Ethanol and ethyl acetate recrystallized a few times.

   The trihydric chloride monohydrate thus obtained melts at 115-118 ° C. and is obtained in a yield of 40-50% of theory.



  <I> Example 2 </I> 7.7 g of lithium aluminum hydride are in 100 cm3 abs. Suspended tetrahydrofuran. A solution of 13 g of 2- (n-hexylamino) -4-amino-5-cyano-pyrimidine in 150 cm3 of tetrahydrofuran is added dropwise to this suspension with stirring. After 2 hours, the mixture is heated to boiling for a further 11/2 hours; then cools down and carefully mixed with water and sodium hydroxide solution.

   The resulting thick paste is sucked off by .Celit and the filtrate is evaporated in a vacuum. The residue is treated with 2N acetic acid, the insoluble parts are filtered off and the filtrate is adjusted to pH 10. Extract with chloroform, dry the chloroform layer and evaporate.

   The residue is treated with acetone and conc. Treated hydrochloric acid in the cold, whereby the dihydrochloride of 2- (n-hexylamino) -4-amino-5-aminomethyl-pyrimidine is obtained in colorless crystals. After recrystallization from abs. Methanol / ether melts the dihydrochloride at 202 to 204 C with decomposition.



  In the same way as described in Examples 1 and 2, the following 5-aminomethyl-4-aminopyrimidines can be obtained from the corresponding 5-cyano compounds: 2- (see diethylaminoethylamino) compound: melting point of the trihydrochloride: 198- 201 C; slightly soluble in water, methanol and ethanol, slightly soluble in acetone; 2-benzylamino compound: melting point of the dihydrochloride monohydrate: 196 to 198 ° C; slightly soluble in water and methanol, slightly soluble in ethanol;

         2-Cyclohexylamino compound: melting point of the monohydrochloride: 201-203 C; slightly soluble in water and methanol, less soluble in ethanol; 2-piperidino compound: melting point of the dihydrochloride monohydrate: 232 to 235 ° C. decomposition; slightly soluble in water and methanol, slightly soluble in acetone; 2-pyrrolidone compound: Mp. Of the dihydrochloride monohydrate: 263 to 268 C decomposition; slightly soluble in water and methanol, slightly soluble in acetone;

           2-anilino compound: melting point of the dihydrochloride monohydrate: 220 to 223 ° C. decomposition; Easily soluble in water and methanol, slightly soluble in acetone.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung neuer 5-Aminomethyl- pyrimidine der Formel EMI0002.0034 worin R1 eine durch ein oder zwei aliphatische, araliphatische, aromatische 'oder heterocyclische Reste substituierte NH2-Gruppe oder die Pyrrolidino- oder Piperidinogruppe, R2 NH2 oder Hydroxyl und R3 Wasserstoff oder niederes Alkyl darstellen, PATENT CLAIM Process for the production of new 5-aminomethylpyrimidines of the formula EMI0002.0034 where R1 is an NH2 group substituted by one or two aliphatic, araliphatic, aromatic or heterocyclic radicals or the pyrrolidino or piperidino group, R2 is NH2 or hydroxyl and R3 is hydrogen or lower alkyl, da durch gekennzeichnet, dass man ein 5-Cyan-pyrimi- din der Formel EMI0002.0049 reduziert. as characterized in that one has a 5-cyano-pyrimidine of the formula EMI0002.0049 reduced.
CH361573D 1957-07-12 1957-07-12 Process for the preparation of new 5-aminomethyl-pyrimidines CH361573A (en)

Applications Claiming Priority (1)

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CH361573T 1957-07-12

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CH361573A true CH361573A (en) 1962-04-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013525377A (en) * 2010-04-23 2013-06-20 サイトキネティクス・インコーポレーテッド Certain amino-pyrimidines, compositions thereof, and methods for using the same
US9994528B2 (en) 2010-04-23 2018-06-12 Cytokinetics, Inc. Certain amino-pyridines and amino-triazines, compositions thereof, and methods for their use
US10076519B2 (en) 2010-04-23 2018-09-18 Cytokinetics, Inc. Substituted pyridazines as skeletal muscle modulators

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013525377A (en) * 2010-04-23 2013-06-20 サイトキネティクス・インコーポレーテッド Certain amino-pyrimidines, compositions thereof, and methods for using the same
US9730886B2 (en) 2010-04-23 2017-08-15 Cytokinetics, Inc. Amino-pyrimidine skeletal muscle modulators
US9994528B2 (en) 2010-04-23 2018-06-12 Cytokinetics, Inc. Certain amino-pyridines and amino-triazines, compositions thereof, and methods for their use
US10076519B2 (en) 2010-04-23 2018-09-18 Cytokinetics, Inc. Substituted pyridazines as skeletal muscle modulators
US10272030B2 (en) 2010-04-23 2019-04-30 Cytokinetics, Inc. Amino-pyrimidine skeletal muscle modulators
US10765624B2 (en) 2010-04-23 2020-09-08 Cytokinetics, Inc. Amino-pyrimidine skeletal muscle modulators
US11369565B2 (en) 2010-04-23 2022-06-28 Cytokinetics, Inc. Amino-pyrimidine skeletal muscle modulators

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