AT256073B - Process for the preparation of new amino-halogen-benzylamines and their addition salts with acids - Google Patents
Process for the preparation of new amino-halogen-benzylamines and their addition salts with acidsInfo
- Publication number
- AT256073B AT256073B AT314266A AT314266A AT256073B AT 256073 B AT256073 B AT 256073B AT 314266 A AT314266 A AT 314266A AT 314266 A AT314266 A AT 314266A AT 256073 B AT256073 B AT 256073B
- Authority
- AT
- Austria
- Prior art keywords
- addition salts
- halogen
- benzylamines
- amino
- preparation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 150000003839 salts Chemical class 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 3
- 239000002253 acid Substances 0.000 title description 8
- 150000007513 acids Chemical class 0.000 title description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 claims description 6
- -1 aliphatic hydrocarbon radicals Chemical class 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052794 bromium Chemical group 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 4
- 150000007522 mineralic acids Chemical class 0.000 claims description 4
- 150000007524 organic acids Chemical class 0.000 claims description 4
- 235000005985 organic acids Nutrition 0.000 claims description 4
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 150000005840 aryl radicals Chemical class 0.000 claims description 2
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 2
- 229910052987 metal hydride Inorganic materials 0.000 claims description 2
- 150000004681 metal hydrides Chemical class 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 2
- 125000003386 piperidinyl group Chemical group 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- SFOYGGATBMGMGG-UHFFFAOYSA-N 3-chloro-4-[[cyclohexyl(methyl)amino]methyl]aniline Chemical compound C1CCCCC1N(C)CC1=CC=C(N)C=C1Cl SFOYGGATBMGMGG-UHFFFAOYSA-N 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229940054066 benzamide antipsychotics Drugs 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 102000010909 Monoamine Oxidase Human genes 0.000 description 1
- 108010062431 Monoamine oxidase Proteins 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000000954 anitussive effect Effects 0.000 description 1
- 230000001754 anti-pyretic effect Effects 0.000 description 1
- 239000002221 antipyretic Substances 0.000 description 1
- NHOWLEZFTHYCTP-UHFFFAOYSA-N benzylhydrazine Chemical class NNCC1=CC=CC=C1 NHOWLEZFTHYCTP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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Verfahren zur Herstellung von neuen Amino-halogen-benzylaminen und deren Additions- salzen mit Säuren
Die Erfindung betrifft ein Verfahren zur Herstellung von neuen Amino-halogen-benzylaminen der allgemeinen Formel
EMI1.1
in der X Chlor oder Brom und Y die freie Aminogruppe oder X die freie Aminogruppe und Y Chlor oder Brom und R und R', die gleich oder verschieden sein können, geradkettige oder verzweigte, gesättigte oder ungesättigte aliphatische Kohlenwasserstoffreste, Cycloalkyl-, Aralkyl- oder Arylreste oder zusammen mit dem Stickstoffatom einen gegebenenfalls durch niedere Alkylreste substituierten Pyrrolidin- oder Piperidinring bedeuten, sowie von deren Säureadditionssalzen mit physiologisch verträglichen anorganischen oder organischen Säuren.
Erfindungsgemäss erfolgt die Herstellung der neuen Verbindungen nach für die Synthese halogenierter Amino-benzylamine üblicher Methode. Das nachstehend beschriebene Verfahren, das erfindungsgemäss zur Anwendung kommt, ergab ausgezeichnete Ausbeuten :
Reduktion von Amino-halogen-benzamiden der allgemeinen Formel
EMI1.2
in der X, Y, R und R'die eingangs angegebenen Bedeutungen besitzen, nach üblichen Methoden.
Die besten Ausbeuten werden durch Reduktion mittels komplexer Metallhydride, vorzugsweise mittels Lithiumaluminiumhydrid, erhalten. Diese erfolgt in einem wasserfreien inerten Lösungsmittel, vorzugsweise Äther, bei mässig erhöhten Temperaturen, zweckmässig bei dem Siedepunkt des verwendeten Lösungsmittels, die Aufarbeitung des Reaktionsgemisches erfolgt auf die übliche Weise.
Die bei dem erfindungsgemässen Verfahren als Ausgangsstoffe verwendeten Verbindungen der Formel II sind aus der Literatur bekannt oder können nach literaturbekannten Verfahren hergestellt werden. So können beispielsweise die Amino-halogen-benzamide der Formel II durch Umsetzung der Halogen-nitrobenzoyl-halogenide mit den entsprechenden sekundären Aminen und anschliessende Reduktion der Nitrogruppe dargestellt werden.
Die erhaltenen Verbindungen können mit physiologisch verträglichen anorganischen oder organischen Säuren auf bekannte Weise in ihre Säureadditionssalze überführt werden, beispielsweise durch Umsetzung einer alkoholischen Lösung der betreffenden Säure mit der äquimolaren Menge der entsprechenden Base.
Als Säuren haben sich beispielsweise Salzsäure, Bromwasserstoffsäure, Schwefelsäure, Phosphorsäure, Milchsäure, Zitronensäure, Weinsäure oder Maleinsäure, als geeignet erwiesen. Die Säureadditionssalze sind wasserlöslich ; praktische Verwendung finden vor allem die Salze mit zwei Äquivalenten der betreffenden Säure.
Die erfindungsgemäss hergestellten Verbindungen weisen wertvolle pharmakologische Eigenschaften auf, insbesondere haben sie neben antipyretischer, sekretolytischer und Monoaminoxydase-Wirkung eine sehr gute hustenstillende Wirkung bei äusserst geringer Toxizität.
Die nachstehenden Beispiele sollen die Erfindung näher erläutern.
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Process for the production of new amino-halogen-benzylamines and their addition salts with acids
The invention relates to a process for the preparation of new amino-halogen-benzylamines of the general formula
EMI1.1
in which X is chlorine or bromine and Y is the free amino group or X is the free amino group and Y is chlorine or bromine and R and R ', which may be identical or different, straight-chain or branched, saturated or unsaturated aliphatic hydrocarbon radicals, cycloalkyl, aralkyl or Aryl radicals or, together with the nitrogen atom, a pyrrolidine or piperidine ring optionally substituted by lower alkyl radicals, as well as their acid addition salts with physiologically compatible inorganic or organic acids.
According to the invention, the new compounds are prepared by the method customary for the synthesis of halogenated aminobenzylamines. The process described below, which is used according to the invention, gave excellent yields:
Reduction of amino-halogen-benzamides of the general formula
EMI1.2
in which X, Y, R and R 'have the meanings given at the beginning, by customary methods.
The best yields are obtained by reduction using complex metal hydrides, preferably using lithium aluminum hydride. This takes place in an anhydrous inert solvent, preferably ether, at moderately elevated temperatures, expediently at the boiling point of the solvent used, and the reaction mixture is worked up in the customary manner.
The compounds of the formula II used as starting materials in the process according to the invention are known from the literature or can be prepared by processes known from the literature. For example, the amino-halo-benzamides of the formula II can be prepared by reacting the halo-nitrobenzoyl halides with the corresponding secondary amines and then reducing the nitro group.
The compounds obtained can be converted into their acid addition salts in a known manner using physiologically compatible inorganic or organic acids, for example by reacting an alcoholic solution of the acid in question with an equimolar amount of the corresponding base.
For example, hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, lactic acid, citric acid, tartaric acid or maleic acid have proven to be suitable acids. The acid addition salts are water soluble; In particular, the salts with two equivalents of the acid in question are used in practice.
The compounds prepared according to the invention have valuable pharmacological properties; in particular, in addition to an antipyretic, secretolytic and monoamine oxidase effect, they have a very good antitussive effect with extremely low toxicity.
The following examples are intended to explain the invention in more detail.
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Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE256073T | 1963-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT256073B true AT256073B (en) | 1967-08-10 |
Family
ID=29751361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT314266A AT256073B (en) | 1963-10-14 | 1964-09-29 | Process for the preparation of new amino-halogen-benzylamines and their addition salts with acids |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT256073B (en) |
-
1964
- 1964-09-29 AT AT314266A patent/AT256073B/en active
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