DE972617C - Process for the preparation of 5-amino-1, 3-dioxanes - Google Patents

Process for the preparation of 5-amino-1, 3-dioxanes

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Publication number
DE972617C
DE972617C DEB17235A DEB0017235A DE972617C DE 972617 C DE972617 C DE 972617C DE B17235 A DEB17235 A DE B17235A DE B0017235 A DEB0017235 A DE B0017235A DE 972617 C DE972617 C DE 972617C
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DE
Germany
Prior art keywords
dioxanes
amino
preparation
dioxane
phenyl
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEB17235A
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German (de)
Inventor
Onno Dipl-Chem Dr Onnen
Wilhelm Dr Peschke
Erich Dipl-Chem Dr Rabald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roche Diagnostics GmbH
Original Assignee
Boehringer Mannheim GmbH
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Publication date
Application filed by Boehringer Mannheim GmbH filed Critical Boehringer Mannheim GmbH
Priority to DEB17235A priority Critical patent/DE972617C/en
Application granted granted Critical
Publication of DE972617C publication Critical patent/DE972617C/en
Expired legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D319/00Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/041,3-Dioxanes; Hydrogenated 1,3-dioxanes
    • C07D319/061,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von 5-Amino-1,3-dioxanen 5-Amino-i,3-dioxane der allgemeinen Formel in welcher R1 und R2 gegebenenfalls substituierte Alkyl-, Aryl-, Aralkyl-, hydroaromatische oder heterocyclische Reste bedeuten und gegebenenfalls auch zu einem gemeinsamen Ring verbunden sind, sind bislang in der Literatur nicht beschrieben worden. Wie gefunden wurde, besitzen verschiedene Vertreter dieser Körperklasse wertvolle pharmakologische Eigenschaften, bzw. sie haben als Zwischenprodukte - insbesondere für die Herstellung von Pharmazeutika - eine erhebliche technische Bedeutung. Es ist bereits bekannt, in 2-Stellung disubstituierte oder in 2-Stellung disubstituierte und gleichzeitig in q.- und 6-Stellung durch gleiche organische Reste substituierte 5-Aminodioxane durch katalytische Hydrierung der entsprechenden 5-Nitroi,3-dioxane herzustellen.Process for the preparation of 5-amino-1,3-dioxanes 5-amino-i, 3-dioxanes of the general formula in which R1 and R2 denote optionally substituted alkyl, aryl, aralkyl, hydroaromatic or heterocyclic radicals and are optionally also linked to form a common ring, have not been described in the literature to date. As has been found, various representatives of this body class have valuable pharmacological properties, or as intermediate products - in particular for the production of pharmaceuticals - they are of considerable technical importance. It is already known that 5-aminodioxanes which are disubstituted in the 2-position or disubstituted in the 2-position and are simultaneously substituted in the q-position and 6-position by the same organic radicals can be prepared by catalytic hydrogenation of the corresponding 5-nitroi, 3-dioxanes.

Erfindungsgemäß lassen sich 5-Amino-i,3-dioxane der angegebenen Zusammensetzung dadurch herstellen, daß man in 5-Halogen-i,3-dioxanen der allgemeinen Formel in welcher Ri und R2 die oben angegebene Bedeutung haben, nach an sich bekannten Methoden das Halogenatom durch eine Aminogruppe ersetzt. Der Austausch gegen die Aminogruppe wird dadurch bewirkt, daß man das betreffende 5-halogenierte i,3-Dioxan in Lösung oder Suspension, vorteilhaft unter Druck, mit Ammoniak behandelt.According to the invention, 5-amino-i, 3-dioxanes of the specified composition can be prepared by converting 5-halogen-i, 3-dioxanes of the general formula into in which Ri and R2 have the meaning given above, the halogen atom is replaced by an amino group according to methods known per se. The exchange for the amino group is effected by treating the 5-halogenated i, 3-dioxane in question in solution or suspension, advantageously under pressure, with ammonia.

Die als Ausgangsmaterial dienenden 5-Halogeni,3-dioxane sind durch das Verfahren des deutschen Patents 870 857 auf bequeme Weise zugänglich geworden.The 5-halo, 3-dioxane used as starting material are through the method of German patent 870 857 has become conveniently accessible.

Beispiel i Eine Lösung von 30 g des nach Beispiel i des deutschen Patents 87o 857 erhaltenen 2,2-Dimethyl-5-brom-6-phenyl-i,3-dioxans in a50 ccm Methanol wird unter Kühlung mit Ammoniak gesättigt. Man erhitzt im geschlossenen Gefäß mehrere Stunden auf i30 bis 14o° C, bis eine Probe anzeigt, daß praktisch alles Brom in ionogen gebundener Form vorliegt. Hierauf wird das Reaktionsgemisch im Vakuum eingedunstet und der Rückstand wiederholt mit Aether ausgezogen. Der gewonnene kristalline Rückstand (29,5 g) wird durch Umkristallisation aus Tetrahydrofuran gereinigt. Das erhaltene basische Hydrobromid schmilzt bei i70 bis i71° C. Aus der wäßrigen Lösung des Hydrobromids läßt sich das 2,2-Dimethyl-5-amino-6-phenyl-i,3-dioxan als wasserhelles Öl, welches im Äther leicht löslich ist, abscheiden. Kp.1,5 112° C.Example i A solution of 30 g of the 2,2-dimethyl-5-bromo-6-phenyl-1,3-dioxane obtained according to Example i of German patent 87o 857 in 50 cc of methanol is saturated with ammonia while cooling. It is heated in a closed vessel for several hours at 130 to 140 ° C. until a sample shows that practically all of the bromine is present in ionically bound form. The reaction mixture is then evaporated in vacuo and the residue is repeatedly extracted with ether. The crystalline residue obtained (29.5 g) is purified by recrystallization from tetrahydrofuran. The basic hydrobromide obtained melts at 170 to 171 ° C. From the aqueous solution of the hydrobromide, 2,2-dimethyl-5-amino-6-phenyl-1,3-dioxane can be obtained as a water-white oil which is easily soluble in ether , deposit. Bp 1.5 112 ° C.

Die N-Benzoylverbindung schmilzt nach dem Umkristallisieren aus Ligroin bei 97° C.The N-benzoyl compound melts after recrystallization from ligroin at 97 ° C.

C19 112103 N Berechnet .... C 73,3I, H6,75, N4,5090; gefunden ..... C73,48, H6,82-, N4,34"/0. Beispiel? Eine Mischung von i20 g 2,2-Dimethyl-5-brom-6-phenyl-i,3-dioxan, 80o ccm 8o%igem Alkohol und 40o g Ammoniak wird 24 Stunden auf 13o° C erhitzt. Das Reaktionsgemisch wird im Vakuum zur Trockne verdampft und der Rückstand mit 60o ccm Wasser und 300 ccm Äther durchgeschüttelt, wobei sich zwei Flüssigkeitsschichten bilden. Die wäßrige Schicht wird abgetrennt und nach Zusatz von 50o ccm konzentrierter Natronlauge dreimal mit je Zoo ccm Ligroin extrahiert. Die vereinigten Ligroinextrakte werden über Natriumsulfat getrocknet, und das Ligroin wird abdestilliert, wobei das 2,2-Dimethyl-5-amino-6-phenyl-1,3-dioxan (58 g) als schwachgelblichgefärbtes Öl hinterbleibt.C19 112 103 N Calculated .... C 73.3I, H6.75, N4.5090; found ..... C73.48, H6.82-, N4.34 "/ 0. Example? A mixture of 20 g 2,2-dimethyl-5-bromo-6-phenyl-1,3-dioxane, 80o cc of 80% alcohol and 40o g of ammonia is heated for 24 hours to 130 ° C. The reaction mixture is evaporated to dryness in vacuo and the residue is shaken with 60o cc of water and 300 cc of ether, forming two layers of liquid and after adding 50o cc of concentrated sodium hydroxide solution, extracted three times with zoo cc of ligroin each time. The combined ligroin extracts are dried over sodium sulfate, and the ligroin is distilled off, the 2,2-dimethyl-5-amino-6-phenyl-1,3- dioxane (58 g) remains as a pale yellowish oil.

Die N-Acetylverbindung schmilzt bei 84 bis 85° C.The N-acetyl compound melts at 84 to 85 ° C.

C14 H19 03 N Berechnet .... C 67,43, H 7,68, N 5,6211/o; gefunden .... . C 67,78, H 7,52, N 5,640/0. Die entsprechende N-Dichloracetylverbindung schmilzt bei 137 bis 138° C. C14 H17 03 N C12 Berechnet C52,83, H5,35, N4,40, C122,32 0/0; gefunden C53,09, 1 15,47, N4, 26, C122,i40/0. Beispiel 3 Eine Mischung von 6o g 2,2-Pentamethylen-5-brom-6-phenyl-i,3-dioxan, 400 ccm 80%igem Alkohol und 2i0 g Ammoniak werden im Autoklav 30 Stunden auf 13o° C erhitzt. Nach der wie im Beispiel e vorgenommenen Aufarbeitung wird das 2,2-Pentamethylen-5-amino-6-phenyl-i,3-dioxaii als dickes; waserhelles Öl vom Kp.O,s i44° C erhalten. Ausbeute 74% der Theorie. Die N-Acetylverbindung schmilzt bei 95° C, die N-Dichloracetylverbindung bei i io° C.C14 H19 03 N Calculated .... C 67.43, H 7.68, N 5.6211 / o; found ..... C 67.78, H 7.52, N 5.640 / 0. The corresponding N-dichloroacetyl compound melts at 137 to 138 ° C. C14 H17 03 N C12 Calculated C52.83, H5.35, N4.40, C122.32 0/0; found C53.09, 1 15.47, N4, 26, C122, i40 / 0. Example 3 A mixture of 60 g of 2,2-pentamethylene-5-bromo-6-phenyl-1,3-dioxane, 400 cc of 80% alcohol and 20 g of ammonia are heated to 130 ° C. in an autoclave for 30 hours. After working up as in Example e, the 2,2-pentamethylene-5-amino-6-phenyl-i, 3-dioxaii is a thick; Waser-clear oil with a boiling point of 0.144 ° C was obtained. Yield 74% of theory. The N-acetyl compound melts at 95 ° C., the N-dichloroacetyl compound at io ° C.

Das als Ausgangsmaterial benutzte 2,2-Pentamethylen-5-brom-6-phenyl-i,3-dioxan vom Schmelzpunkt 62° C wurde gemäß dem deutschen Patent 87o 857 wie folgt dargestellt: Eine Lösung von 6o g i-Phenyl-2-brom-propandiol-(1,3) und 26 g Cyclohexanon in 300 ccm Benzol wird nach Zusatz von o, i g p-Toluolsulfonsäure unter Rückfluß erhitzt, bis die theoretische Menge Wasser abgespalten ist (vgl. Berichte der Deutschen Chemischen Gesellschaft, Bd. 71, S.1803 [19381). Nach dem Abdestillieren des Benzols hinterbleibt das gewünschte Produkt als kristallinischer Rückstand. Reinigung durch Umkristallisieren aus Alkohol.The 2,2-pentamethylene-5-bromo-6-phenyl-i, 3-dioxane with a melting point of 62 ° C. was prepared as follows according to German patent 87o 857: A solution of 6o g of i-phenyl-2- Bromopropanediol (1,3) and 26 g of cyclohexanone in 300 cc of benzene are refluxed after adding o, ig p-toluenesulfonic acid until the theoretical amount of water has been split off (see reports from the German Chemical Society, Vol. 71 , P.1803 [19381). After the benzene has been distilled off, the desired product remains as a crystalline residue. Purification by recrystallization from alcohol.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 5-Amino-1,3-dioxanen der allgemeinen Formel in welcher R1 und R2 gegebenenfalls substituierte Alkyl-, Aryl-, Aralkyl-, hydroaromatische oder heterocyclische Reste bedeuten und gegebenenfalls auch zu einem gemeinsamen Ring verbunden sind, dadurch gekennzeichnet, daß man 5-Halogen-i,3-dioxane der allgemeinen Formel in welcher R1 und R2 die oben angegebene Bedeutung haben, nach an sich bekannten Methoden mit Ammoniak, zweckmäßig unter Druck, behandelt. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 705 435, 717 953; USA.-Patentschriften Nr. 2 296 375, 2 368 071, 2 37o 586;PATENT CLAIM: Process for the preparation of 5-amino-1,3-dioxanes of the general formula in which R1 and R2 are optionally substituted alkyl, aryl, aralkyl, hydroaromatic or heterocyclic radicals and are optionally also connected to form a common ring, characterized in that 5-halo-i, 3-dioxanes of the general formula in which R1 and R2 have the meaning given above, treated by methods known per se with ammonia, expediently under pressure. Considered publications: German Patent Specifications No. 705 435, 717 953; U.S. Patent Nos. 2,296,375, 2,368,071, 2,370,586;
DEB17235A 1951-10-20 1951-10-20 Process for the preparation of 5-amino-1, 3-dioxanes Expired DE972617C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB17235A DE972617C (en) 1951-10-20 1951-10-20 Process for the preparation of 5-amino-1, 3-dioxanes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974692C (en) * 1952-03-27 1961-03-30 Boehringer & Soehne Gmbh Process for the preparation of 2,2-disubstituted 5-acylamino-4- (p-nitrophenyl) -1,3-dioxanes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE705435C (en) * 1939-03-23 1941-04-28 I G Farbenindustrie Akt Ges Production of 2,3-dichlorodioxane
US2296375A (en) * 1939-10-12 1942-09-22 Standard Oil Dev Co Halogenated meta-dioxanes
US2368071A (en) * 1942-02-06 1945-01-23 Commerical Solvents Corp Ketals of polyhydroxy nitro compounds
US2370586A (en) * 1942-04-02 1945-02-27 Commercial Solvents Corp Aminodioxanes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE705435C (en) * 1939-03-23 1941-04-28 I G Farbenindustrie Akt Ges Production of 2,3-dichlorodioxane
DE717953C (en) * 1939-03-23 1942-02-26 Ig Farbenindustrie Ag Production of 2,3-dichlorodioxane
US2296375A (en) * 1939-10-12 1942-09-22 Standard Oil Dev Co Halogenated meta-dioxanes
US2368071A (en) * 1942-02-06 1945-01-23 Commerical Solvents Corp Ketals of polyhydroxy nitro compounds
US2370586A (en) * 1942-04-02 1945-02-27 Commercial Solvents Corp Aminodioxanes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974692C (en) * 1952-03-27 1961-03-30 Boehringer & Soehne Gmbh Process for the preparation of 2,2-disubstituted 5-acylamino-4- (p-nitrophenyl) -1,3-dioxanes

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