CH148289A - Process for the preparation of 6,7-dioxymethylene-3-methyl-1- (3'.4'-dioxymethylenebenzyl) -isoquinoline. - Google Patents

Process for the preparation of 6,7-dioxymethylene-3-methyl-1- (3'.4'-dioxymethylenebenzyl) -isoquinoline.

Info

Publication number
CH148289A
CH148289A CH148289DA CH148289A CH 148289 A CH148289 A CH 148289A CH 148289D A CH148289D A CH 148289DA CH 148289 A CH148289 A CH 148289A
Authority
CH
Switzerland
Prior art keywords
dioxymethylene
isoquinoline
methyl
prisms
dioxymethylenebenzyl
Prior art date
Application number
Other languages
German (de)
Inventor
Firma E Merck
Original Assignee
Merck Ag E
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 Merck Ag E filed Critical Merck Ag E
Publication of CH148289A publication Critical patent/CH148289A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D217/00Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
    • C07D217/12Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with radicals, substituted by hetero atoms, attached to carbon atoms of the nitrogen-containing ring
    • C07D217/18Aralkyl radicals
    • C07D217/20Aralkyl radicals with oxygen atoms directly attached to the aromatic ring of said aralkyl radical, e.g. papaverine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)

Description

  

  Verfahren zur Darstellung. von     6,7-Dioxymethylen-3-methyl-1-(3'    .     4'-dioxymet1)ylen-          benzyl)-isochinolin.       Es ist bekannt     (Bischler    und     Napieralski,          Fer.    d. deutsch.     chem.    Gesellschaft, 26 (1893)  1903,     Pictet    und     Finkelstein,        Ber.    d. deutsch.

         chem.    Gesellschaft, 42 (1909) 1979), dass       Säureamide,    welche aus     Phenylessigsäuren     und 1 -     Phenyl    - 2 -     aminoäthanen    gekuppelt  worden sind, unter dem Einfluss kondensie  render     Mittel,    wie Chlorzink,     Phosphor-          pentoxyd,        Phosphoroxychlorid    in     Benzyl-          dihydroisochinoline        überführbar    sind.  



  Es wurde nun gefunden, dass     Säureamide,     welche als basische Komponente das     1-Me-          t:liy        lendioxyphenyl-2-amino-propan    (D. R. P.       Nr.2743,50)    enthalten, ebenfalls unter dem  Einfluss kondensierender Mittel in     Benzyl-          clihydroisochinoline    übergehen. Diese waren  noch nicht bekannt.

   Durch     Dehydrierung     derselben können Basen erhalten werden,  welche dem     Papaverin    an     therapeutischer     Wirkung überlegen sind, während die be  reits bekannten     Verwandten    des     Papaverins     für medizinische Verwendung nicht geeignet    waren     (Mahnich    und Walther, Archiv d.       Pharm.    265 (1927), S. 3).  



  Es war bereits bekannt. dass     Di-    und     Te-          trahydropapaverin    sich mittelst Palladium  zum     Papaverin    dehydrieren lassen     (Spaet    u.       Burger,        Ber.    d. deutsch.     chem.    Ges. 60     (192i7),     704); aber in diesem Falle tragen die bei  den     Kohlenstoffatome,    deren einfache Bin  dung in eine doppelte überführt werden soll,  noch je zwei Wasserstoffatome.

   Im vorlie  genden Falle handelt es sich nun um eine       Dehydrierung,    bei welcher eines jener H  Atome durch eine     Alkylgruppe    ersetzt ist,  wodurch die     Dehydrierung    erschwert     bezw.     unter Umständen unmöglich gemacht wird.  



  Hervorragende, dem     Papaverin    über  legene     therapeutische    Wirkungen zeigt vor  allem das noch nicht. bekannte     6,7-Dioxy-          methylen-3-methyl-1-(3'    .     I'-clioxymethylen-          benzyl)    -     isochinolin,    welches erfindungsge  mäss dadurch hergestellt wird, dass man das       Säureamid,    gebildet aus 1-(3'. 4'-Dioxy-mP-           thylenphenyl)-2-aminopropan    und     3,4-Dioxy-          methylen-phenylessigsäure,    mit sauren Kon  densationsmitteln behandelt und die so ge  wonnene Base mit fein verteiltem Palladium  dehydriert.  



  <I>Beispiel:</I>  <B>10</B> Teile des genannten     Amids        CH202    =       C,H3-CH2-CH(CH3)-NH-CO-CH2-          CJH3    =     02CH2    (F. =146  ) werden in 1,80  Teilen     heissen        Toluols    gelöst und mit 6 Tei  len     Phosphoroxychlorid    3 Stunden auf etwa  100   erhitzt.

   Das Reaktionsprodukt, welches  sich als dunkle, zum Teil     kristallisierte     Masse abscheidet,     wird    vom     Toluol    abge  trennt und mit 100 Teilen Wasser unter Er  wärmen eine halbe Stunde gerührt, mit  Kohle     filtriert    und der Kristallisation über  lassen. Das Hydrochlorid der neuen Base  scheidet sich in Prismen ab, welche bei     23.7       unter Zersetzung schmelzen. 1.0 Teile der  selben werden mit 1 Teil     Palladiummooar     Stunden bei etwa     1$0      gerührt. Die  Schmelze wird in heisser 4 %     iger    Salzsäure  gelöst, mit Kohle     gereinigt    und der Kristalli  sation überlassen.

   Das Hydrochlorid schei  det sich in Prismen ab, welche bei<B>1159</B>    schmelzen. Die freie Base kristallisiert aus  Methanol, Äther oder Benzol in glänzenden    Prismen vom Schmelzpunkt 140  . Sie ist  leicht löslich in kaltem     Methylenchlorid.     
EMI0002.0022     




  Method of representation. of 6,7-dioxymethylene-3-methyl-1- (3 ', 4'-dioxymet1) ylene-benzyl) -isoquinoline. It is known (Bischler and Napieralski, Fer. D. German. Chem. Society, 26 (1893) 1903, Pictet and Finkelstein, Ber. D. German.

         chem. Gesellschaft, 42 (1909) 1979) that acid amides which have been coupled from phenylacetic acids and 1 - phenyl - 2 - aminoethanes can be converted into benzyl dihydroisoquinolines under the influence of condensing agents such as zinc chloride, phosphorus pentoxide, phosphorus oxychloride.



  It has now been found that acid amides, which contain the 1-meta-t: liy lendioxyphenyl-2-aminopropane (D. R. P. No. 2743.50) as a basic component, also convert to benzyl clihydroisoquinolines under the influence of condensing agents. These were not yet known.

   By dehydrating them, bases can be obtained which are superior to papaverine in terms of therapeutic effect, while the already known relatives of papaverine were not suitable for medical use (Mahnich and Walther, Archiv d. Pharm. 265 (1927), p. 3) .



  It was already known. that di- and tetrahydropapaverine can be dehydrated to papaverine by means of palladium (Spaet and Burger, Ber. d. German. chem. Ges. 60 (192i7), 704); but in this case the carbon atoms whose single bond is to be converted into a double bond each have two hydrogen atoms.

   In the present case it is a dehydrogenation in which one of those H atoms is replaced by an alkyl group, which makes the dehydrogenation more difficult or more difficult. may be made impossible.



  Above all, this does not yet show excellent therapeutic effects superior to papaverine. known 6,7-dioxymethylene-3-methyl-1- (3 '. I'-clioxymethylene benzyl) isoquinoline, which according to the invention is produced by the amide formed from 1- (3', 4 '-Dioxy-mP-thylenephenyl) -2-aminopropane and 3,4-dioxymethylene-phenylacetic acid, treated with acidic condensation agents and the base thus obtained is dehydrated with finely divided palladium.



  <I> Example: </I> <B> 10 </B> parts of the amide mentioned CH202 = C, H3-CH2-CH (CH3) -NH-CO-CH2-CJH3 = 02CH2 (F. = 146) dissolved in 1.80 parts of hot toluene and heated to about 100 for 3 hours with 6 parts of phosphorus oxychloride.

   The reaction product, which separates out as a dark, partially crystallized mass, is separated from the toluene and stirred with 100 parts of water while warming for half an hour, filtered with charcoal and allowed to crystallize. The hydrochloride of the new base separates out in prisms, which melt at 23.7 with decomposition. 1.0 parts of the same are stirred with 1 part of palladium for a few hours at about 1%. The melt is dissolved in hot 4% hydrochloric acid, cleaned with charcoal and left to crystallize.

   The hydrochloride is deposited in prisms, which melt at <B> 1159 </B>. The free base crystallizes from methanol, ether or benzene in shiny prisms with a melting point of 140. It is easily soluble in cold methylene chloride.
EMI0002.0022


 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 6 . 7-Di- oxymethylen-3-methyl-1-(3' . 4'-dioxymethy- lenbenzyl)-isochinolin, dadurch gekennzeich net, dass man das Säureamid, gebildet aus 1-(3' . 4'-Dioxymethylenphenyl)-2-aminopro- pan und 3,4 - Dioxymethylen - phenyl-essig- säure, mit sauren Kondensationsmitteln be handelt und die so gewonnene Base mit fein verteiltem Palladium dehydriert. PATENT CLAIM: Method for the representation of 6. 7-dioxymethylene-3-methyl-1- (3 ', 4'-dioxymethylene benzyl) isoquinoline, characterized in that the acid amide, formed from 1- (3', 4'-dioxymethylene phenyl) -2 -aminopro- pan and 3,4-dioxymethylene-phenyl-acetic acid, treated with acidic condensation agents and the base obtained in this way is dehydrated with finely divided palladium. Die neue Substanz kristallisiert aus Methanol, Äther oder Benzol in glänzenden Prismen vom Schmelzpunkt 140'. Sie ist leicht löslich in kaltem Methylenchlorid. Das Hydrochlorid bildet Prismen, welche bei 159 schmelzen. The new substance crystallizes from methanol, ether or benzene in shiny prisms with a melting point of 140 '. It is easily soluble in cold methylene chloride. The hydrochloride forms prisms which melt at 159.
CH148289D 1929-08-24 1930-03-08 Process for the preparation of 6,7-dioxymethylene-3-methyl-1- (3'.4'-dioxymethylenebenzyl) -isoquinoline. CH148289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM111600D DE550122C (en) 1929-08-24 1929-08-24 Process for the production of pellets of 1-benzyl-3-methylisoquinoline

Publications (1)

Publication Number Publication Date
CH148289A true CH148289A (en) 1931-07-15

Family

ID=7327290

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148289D CH148289A (en) 1929-08-24 1930-03-08 Process for the preparation of 6,7-dioxymethylene-3-methyl-1- (3'.4'-dioxymethylenebenzyl) -isoquinoline.

Country Status (3)

Country Link
AT (1) AT131117B (en)
CH (1) CH148289A (en)
DE (1) DE550122C (en)

Also Published As

Publication number Publication date
DE550122C (en) 1932-05-10
AT131117B (en) 1933-01-10

Similar Documents

Publication Publication Date Title
CH398626A (en) Process for the preparation of new pyrazolopyrimidines
DE2305092A1 (en) Alpha-aminomethylbenzyl alcohol derivs. - prepd. by redn. of corresponding protected derivs.
DE2265169B2 (en) Ethyl Vincaminate, Manufacturing Processes and Pharmaceutical Agents
DE2347142C2 (en) 5-endo-benzoyloxy-N- (3-dimethylamino-propyl) -bicyclo- [2.2.1] heptane-2,3-di-endo-carboximide, their acid addition salts, processes for their preparation and pharmaceutical agents
CH148289A (en) Process for the preparation of 6,7-dioxymethylene-3-methyl-1- (3&#39;.4&#39;-dioxymethylenebenzyl) -isoquinoline.
DE2722416A1 (en) Thiazolo-pyrido-pyrrole, -pyridine and -azepine derivs. - useful as anorexigenic agents with no cardiovascular side effects
AT313224B (en) PROCESS FOR THE PREPARATION OF L (-) - 3- (3,4-DIHYDROXYPHENYL) -ALANINE AND L (-) - 3- (3-HYDROXYPHENYL) -ALANINE AND THE CORRESPONDING ETHERED DERIVATIVES
AT229496B (en) Process for the preparation of the new nicotinic acid ester of dihydroxycodeinone
DE939207C (en) Process for the preparation of basic substituted fatty acid (2-chloro-6-methyl-anilides) and their salts which can be used as local anesthetics
AT269886B (en) Process for the production of new benzomorphan derivatives and their salts
DE936446C (en) Process for the preparation of new amides of pyridine-3, 5-dicarboxylic acid
AT257573B (en) Process for the preparation of the new N-benzyl-α, α-dimethyl-β- (p-fluorophenyl) ethylamine and its salts
DE725534C (en) Process for the preparation of isoquinoline compounds
DE1445845C (en) 5-phenyl-6,7-benzomorphane
DE1038047B (en) Process for the preparation of N-aminoalkylated iminodibenzyls and their salts
AT282593B (en) PROCESS FOR THE PREPARATION OF NEW RACEMIC OR OPTICALLY ACTIVE (1-2&#39;-NITRILOPHENOXY) -2-HYDROXY-3-ISOPROPYLAMINOPROPANE AND ITS SALTS
AT307434B (en) Process for the preparation of new pyrimidine derivatives and their salts
DE1445969C (en) Process for the preparation of basic 3,4,5 trimethoxybenzoic acid esters
AT278801B (en) PROCESS FOR THE PREPARATION OF NEW 1-SUBSTITUTED 3-ALKYL-3-CARBALCOXY-6,7-DIMETHOXY-3,4-DIHYDROISOCHINOLINES AND THEIR SALT
AT215996B (en) Process for the preparation of new pyridine derivatives
DE551870C (en) Process for the production of pellets of 1-benzyl-3-methylisoquinoline
CH509315A (en) Optical separation of 1-3 4 5-trimethoxy-benzyl-6 7
DE2617440A1 (en) 2-HYDROXYIMINO-1,2,3,4,6,7-HEXAHYDRO- 11BH-BENZO SQUARE CLAMP ON A SQUARE BRACKET TO QUINOLINE DERIVATIVES, MEDICINAL PRODUCTS CONTAINING SUCH AND METHOD FOR MANUFACTURING THE SAME AND 2-OXO-1, 2,3,4 , 6,7-HEXAHYDRO-11BH-BENZO SQUARE BRACKET ON ANGLE BRACKET FOR QUINOLINE DERIVATIVES AND METHOD OF PREPARING THE LATTER
CH369764A (en) Process for the preparation of new a-aryl-w-amino-alkanoic acids and their derivatives
CH514615A (en) 3-Isopropyl 5-phenoxymethyloxazolidines