DE392067C - Process for the preparation of N-aralkylated imidazolylalkylamines - Google Patents

Process for the preparation of N-aralkylated imidazolylalkylamines

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Publication number
DE392067C
DE392067C DEG52538D DEG0052538D DE392067C DE 392067 C DE392067 C DE 392067C DE G52538 D DEG52538 D DE G52538D DE G0052538 D DEG0052538 D DE G0052538D DE 392067 C DE392067 C DE 392067C
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imidazolylalkylamines
aralkylated
aryl
preparation
general formula
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DEG52538D
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German (de)
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/64Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Verfahren zur Darstellung von N-aralkylierten Imidazolylalkylaminen. Durch Patent 332955, Zusatz zum Zusatzpatent 278884 (Hauptpatent 276341) ist ein Verfahren zur Darstellung von 5(4)-Arylparaffindminoparaffinimidazolen geschützt, das in der Kondensation von Imidazolparaffinchloriden mit Arylparaffinaminen oder von Arylparaffinchloriden der allgemeinen Formel: Aryl (CH,) x # Cl (worin x = mindestens 2), mit Imidazol paraffinaminen besteht. Die so erhaltenen Produkte sind durch secaleartige Wirkung ausgezeichnet.Process for the preparation of N-aralkylated imidazolylalkylamines. Patent 332955, addendum to additional patent 278884 (main patent 276341) protects a process for the preparation of 5 (4) -aryl paraffin minoparaffinimidazoles, which occurs in the condensation of imidazole paraffin chlorides with aryl paraffin amines or of aryl paraffin chlorides of the general formula: aryl (CH,) x # Cl ( where x = at least 2), with imidazole paraffinamines. The products thus obtained are distinguished by their secale-like effect.

Es wurde nun gefunden, daß man zu Verbindungen mit ähnlichen wertvollen pharmakologischen Eigenschaften gelangen kann, wenn man auf die Silber- oder Alkalisalze von Imidazolylalkylaminen der allgemeinen Formel: oder der entsprechenden Exobenzolylverbindungen der Zusammensetzung (vgl. Zeitschr. f. physiolog. Dhem. 1o8 [igig] S. 58) Aralkylhalogenideder allgemeinen Formel Aryl # C HZ # Halogen (worin Aryl einen unsubstituierten oder substituierten aromatischen Kohlenwasserstoffrest bedeutet) einwirken läßt. Im ersteren Falle entsteht als Hauptprodukt ein in der Aminogruppe der Seitenkette diaralkyliertes Imidazolylalkylamin und in geringer Menge das an der i-Iminogruppe des Imidazolringes aralkylierte I: erivat, während bei Verwendung der Exöbenzoylverbindungen der Aralkylrest ausschlieLlich in die i-Iminogruppe des Ringes eintiitt. Der Acidylrest läßt sich, falls "erforderlich, nach der .Kondensation besonders abspalten.It has now been found that compounds with similar valuable pharmacological properties can be obtained by looking at the silver or alkali metal salts of imidazolylalkylamines of the general formula: or the corresponding exobenzolyl compounds of the composition (cf. Zeitschr. f. Physiolog. Dhem. 1o8 [igig] p. 58) Aralkyl halides of the general formula Aryl # C HZ # Halogen (in which aryl denotes an unsubstituted or substituted aromatic hydrocarbon radical) can act. In the former case, the main product is an imidazolylalkylamine diaralkylated in the amino group of the side chain and, in a small amount, the derivative aralkylated on the i-imino group of the imidazole ring, while when using the exobenzoyl compounds, the aralkyl radical is exclusively in the i-imino group of the ring. If necessary, the acidyl radical can be split off after the condensation.

Beispiel I.Example I.

2,2 g Silbersalz des Imidazolyläthylamines (Histamins) werden mit 1,7 g Benzylbromid in 2o ccm absolutem Alkohol 6 Stunden am Rück fiußkühler gekocht. Nach der Entfernung des Silberbromids wird im Vakuum eingedampft. Es entsteht ein gelbes 01, das nach Zusatz von wässeriger Bromwasserstoffsäure zwecks Entfernung des überschüssigen Benzylbromids mit Äther ausgeschüttelt wird. Beim Eindampfen ihn Vakuum kristallisiert das bromwasserstoffsaure Salz des N-exo-Dibenzylhistamins vom Schmelzpunkt i52° aus. Durch Lösen im Wasser und Zusatz von Ammoniak erhält man die in Wasser sehr schwer lösliche, in Gestalt von Nädelchen kristallisierende freie Base vom Schmelzpunkt T29°. Daneben entsteht in geringer Menge in Form eines nicht kristallisierenden Öles die im Imidazolring benzylierte Base, welche sich von dem nur in der Seitenkette benzylierten Derivat durch das Ausbleiben der blutroten Färbung mit Diazobenzolsulfosäure unterscheidet. Die Kon3titution der N-exo-Dibenzylverbindung wirddurch folgenden Versuch bewiesen 2,15 g freie Histaminbase, in 13 ccm trockenem Methylalkohol gelöst, werden mit 1,66 g Benzylbromid in 7 ccm Methylalkohol To Stunden auf ioo° im Einschlußrohr erhitzt. Nach der Entfernung des Alkohols beim Eindampfen im Vakuum kristallisiert unmittelbar die freie N-exo-Dibenzylbase aus, die nach einmaligem Umkristallisieren aus 40prozentigem Alkohol den Schmelzpunkt von i29° erreicht.2.2 g of the silver salt of imidazolylethylamine (histamine) are refluxed for 6 hours with 1.7 g of benzyl bromide in 2o ccm of absolute alcohol. After the silver bromide has been removed, it is evaporated in vacuo. The result is a yellow oil which, after adding aqueous hydrobromic acid, is shaken out with ether to remove the excess benzyl bromide. On evaporation in a vacuum, the hydrobromic acid salt of N-exo-dibenzylhistamine crystallizes out with a melting point of i52 °. By dissolving in water and adding ammonia, the free base, which is very sparingly soluble in water and crystallizes in the form of needles, has a melting point of T29 °. In addition, the base benzylated in the imidazole ring is formed in a small amount in the form of a non-crystallizing oil, which differs from the derivative benzylated only in the side chain in that it does not turn red with diazobenzenesulfonic acid. The constitution of the N-exo-dibenzyl compound is demonstrated by the following experiment 2.15 g of free histamine base, dissolved in 13 cc of dry methyl alcohol, are heated with 1.66 g of benzyl bromide in 7 cc of methyl alcohol for hours at 100 ° in the containment tube. After the alcohol has been removed by evaporation in vacuo, the free N-exo-dibenzyl base crystallizes immediately which, after one recrystallization from 40 percent alcohol, reaches the melting point of i29 °.

Beispiel Il.Example Il.

Das für diesen Versuch nötige Silbersalz des Exo-Benzoylhistamins erhält man rein, wenn man 2,15g der Exo-Benzoylverbindungin4occm Wasser und To ccm Alkohol heiß löst, mit To ccm n-Ammoniak versetzt und der lauwarmen Lösung 4559 g Silbersulfat in Zoo ccm Wasser hinzufügt. Der auf diese Weise gebildete körnige, gut filtrierbare Niederschlag wird sorgfältig getrocknet.The silver salt of exo-benzoylhistamine necessary for this experiment you get pure if you add 2.15 g of the exo-benzoyl compound in 4 ounces of water and To cc Alcohol dissolves hot, mixed with To ccm n-ammonia and the lukewarm solution 4559 g of silver sulfate in Zoo ccm of water. The granular, easily filterable precipitate is carefully dried.

6,4 g dieses Silbersalzes werden fein gepulvert in der zehnfachen Menge getrockneten Methylalkohols suspendiert, mit 3,4 g Benzylbromid versetzt und in einem Einschlußrohr 6 Stunden auf ioo° erhitzt. Nach der Entfernung des dabei entstehenden Benzoesäureäthylesters und der Benzoesäure wird im Vakuum eingedampft, der ölige Rückstand in warmem Wasser gelöst und bis zum Pauerndbleiben von Ammoniakgeruch mit Ammoniak versetzt. Dabei fällt die Exo-Benzylhistaminbase: in Gestalt eines nicht kristallisierenden Öles aus. Lie Verbindung ist in Wasser schwer löslich und gibt mit Diazobenzolsulfosäure keinerlei Färbung, zum Zeichen, daß der Iminowasserstoff im Benzolring substituiert ist.6.4 g of this silver salt are finely powdered, suspended in ten times the amount of dried methyl alcohol, 3.4 g of benzyl bromide are added and the mixture is heated to 100 ° in a containment tube for 6 hours. After the resulting ethyl benzoate and benzoic acid have been removed, the mixture is evaporated in vacuo, the oily residue is dissolved in warm water and ammonia is added until the ammonia odor persists. The exo-benzylhistamine base falls: in the form of a non-crystallizing oil. The compound is sparingly soluble in water and does not give any coloration with diazobenzenesulfonic acid, indicating that the imino hydrogen in the benzene ring is substituted.

Claims (1)

PATENT-ANSPRUCIi: Abänderung des durch Patent 332955 Zusatz zum Patent 27888q., geschützten Verfahrens, darin bestehend, daß man zwecks Darstellung von N-aralkylierten Imidazolylalkylaminen auf die Silber- oder Alkalisalze von Imidazolylalkylaminen der allgemeinen Formel oder der entsprechenden Exo-Benzoylverbindungen der Zusammensetzung Aralkylhalogenide der allgemeinen Formel: Aryl # C H2 # Halogen (worin Aryl einen unsubstituierten oder substituierten aromatischen Kohlenwasserstoffrest bedeutet), einwirken läßt.PATENT REQUIREMENTS: Modification of the process protected by patent 332955, addendum to patent 27888q., Consisting in that, in order to prepare N-aralkylated imidazolylalkylamines, the silver or alkali metal salts of imidazolylalkylamines of the general formula or the corresponding exo-benzoyl compounds of the composition Aralkyl halides of the general formula: Aryl # C H2 # Halogen (in which aryl denotes an unsubstituted or substituted aromatic hydrocarbon radical).
DEG52538D 1920-12-07 1920-12-07 Process for the preparation of N-aralkylated imidazolylalkylamines Expired DE392067C (en)

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DEG52538D DE392067C (en) 1920-12-07 1920-12-07 Process for the preparation of N-aralkylated imidazolylalkylamines

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Application Number Priority Date Filing Date Title
DEG52538D DE392067C (en) 1920-12-07 1920-12-07 Process for the preparation of N-aralkylated imidazolylalkylamines

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DE392067C true DE392067C (en) 1924-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532547A (en) * 1950-12-05 Z-aminoalkyl-glyoxaline derivatives

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532547A (en) * 1950-12-05 Z-aminoalkyl-glyoxaline derivatives

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