CH122519A - Process for the preparation of an aralkylamine. - Google Patents
Process for the preparation of an aralkylamine.Info
- Publication number
- CH122519A CH122519A CH122519DA CH122519A CH 122519 A CH122519 A CH 122519A CH 122519D A CH122519D A CH 122519DA CH 122519 A CH122519 A CH 122519A
- Authority
- CH
- Switzerland
- Prior art keywords
- oxybenzene
- preparation
- parts
- oxybenzylamine
- aralkylamine
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Verfahren zur Darstellung eines Aralkylamins. Es wurde weiter gefunden, dass man nach dem im Hauptpatent beschriebenen Verfah ren 4-Oxybenzylamin herstellen kann, wenn man an Stelle des dort verwendeten Benzols Oxybenzol verwendet.
<I>Beispiel:</I> 155 Teile Oxybenzol und 325 Teile m Chlormethylphtalimid werden in 2500 Teilen Benzol gelöst, wobei, wie ersichtlich, das Ben zol, das gleichzeitig Lösungsmittel ist, im Über schuss vorhanden ist. Nach Zugabe von 50 Teilen Chlorzink, das als Katalysator dient, erwärmt man allmählich auf dem Wasserbade auf 70-800 C, bis die Chlorwasserstoffentwick- lung aufgehört hat. Man dekantiert und destil liert das Benzol ab.
Aus dem Rückstand kann das Kondensationsprodukt durch Um kristallisieren aus heissem Alkohol in rein weissen Kristallen erhalten werden. 25 Teile davon werden mit 30 Teilen 35 % iger Na triumhydroxydlösung und 200 Teilen Wasser in der Kälte 2 Stunden gerührt; darauf wird mit verdünnter Salzsäure angesäuert und auf dem Wasserbade erwärmt, bis etwa ausge schiedenes<B>01</B> in Lösung gegangen ist. Durch mehrmaliges Ausäthern wird die Phtalsäure entfernt und dann die schwach salzsaure wässerige Lösung im Vakuum zur Trockne eingedampft.
Der Rückstand wird mit was serfreiem .Alkohol ausgezogen ; beim Ein dampfen der Lösung erhält man 4-Oxy- benzylaminchlorhydrat, daneben einwenig 2- Oxybenzylaminchlorhydrat. 4-Oxybenzylamin schmilzt bei 10711, 2-Oxybenzylamin bei 129 0.
Process for the preparation of an aralkylamine. It was also found that 4-oxybenzylamine can be prepared according to the method described in the main patent if oxybenzene is used instead of the benzene used there.
<I> Example: </I> 155 parts of oxybenzene and 325 parts of chloromethylphthalimide are dissolved in 2500 parts of benzene, with the benzene, which is also a solvent, in excess, as can be seen. After adding 50 parts of zinc chloride, which serves as a catalyst, the mixture is gradually heated to 70-800 ° C. on the water bath until the evolution of hydrogen chloride has ceased. The benzene is decanted and distilled off.
The condensation product can be obtained from the residue in pure white crystals by recrystallization from hot alcohol. 25 parts thereof are stirred with 30 parts of 35% strength sodium hydroxide solution and 200 parts of water in the cold for 2 hours; Then it is acidified with dilute hydrochloric acid and warmed up on the water bath until approximately separated <B> 01 </B> has dissolved. The phthalic acid is removed by repeated etherification and then the weak hydrochloric acid aqueous solution is evaporated to dryness in vacuo.
The residue is extracted with water-free alcohol; when the solution is evaporated, 4-oxybenzylamine chlorohydrate is obtained, along with a little 2-oxybenzylamine chlorohydrate. 4-Oxybenzylamine melts at 10711, 2-Oxybenzylamine at 129 0.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE122519X | 1925-03-30 | ||
CH120519T | 1926-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH122519A true CH122519A (en) | 1927-09-16 |
Family
ID=25709454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH122519D CH122519A (en) | 1925-03-30 | 1926-03-23 | Process for the preparation of an aralkylamine. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH122519A (en) |
-
1926
- 1926-03-23 CH CH122519D patent/CH122519A/en unknown
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