DE135332C - - Google Patents
Info
- Publication number
- DE135332C DE135332C DENDAT135332D DE135332DA DE135332C DE 135332 C DE135332 C DE 135332C DE NDAT135332 D DENDAT135332 D DE NDAT135332D DE 135332D A DE135332D A DE 135332DA DE 135332 C DE135332 C DE 135332C
- Authority
- DE
- Germany
- Prior art keywords
- aniline
- alkali
- aqueous
- formaldehyde
- salts
- 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.)
- Active
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- ZGUNAGUHMKGQNY-UHFFFAOYSA-N α-phenylglycine Chemical compound OC(=O)C(N)C1=CC=CC=C1 ZGUNAGUHMKGQNY-UHFFFAOYSA-N 0.000 claims description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N Hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000004429 atoms Chemical group 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000004992 toluidines Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-Naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000005002 naphthylamines Chemical class 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- RTVFYQXEHKQMKO-UHFFFAOYSA-N sodium cyanide Chemical compound [Na]C#N RTVFYQXEHKQMKO-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Vi 135332 KLASSE 12 g.Vi 135332 CLASS 12 g.
Es wurde gefunden, dafs bei der Wechselwirkung von Anilin, Formaldehyd und Cyan-Alkali oder Erdalkali in wässriger oder wässrigalkoholischer Lösung in der Wärme eine Reaction im Sinne folgender Gleichung stattfindet:It has been found that in the interaction of aniline, formaldehyde and cyano-alkali or alkaline earth in aqueous or aqueous-alcoholic solution under heat a reaction takes place in the sense of the following equation:
C6HsNH2 -f COH2 + RCN + H2O = C6HsNH-CH2-COOR + NH3, C 6 HsNH 2 -f COH 2 + RCN + H 2 O = C 6 HsNH-CH 2 -COOR + NH 3 ,
wobei R ein Atom eines Alkali- oder ein halbes Atom eines Erdalkalimetalles bedeutet. Es entsteht also neben Ammoniak das Alkalibezw. Erdalkalisalz des Phenylglycins.where R is an atom of an alkali or half an atom of an alkaline earth metal. In addition to ammonia, alkali or alkali is formed. Alkaline earth salt of phenylglycine.
Ersetzt man in obiger Gleichung das Anilin durch die äquivalenten Mengen homologer aromatischer Basen, insbesondere durch die Toluidine, Xylidine und Naphtylamine, so erhält man die Salze der homologen Arylamidoessigsäuren. Aus den Salzen kann man die freien Säuren in bekannter Weise gewinnen.If one replaces the aniline in the above equation by the equivalent amounts of homologous aromatic bases, especially through the toluidines, xylidines and naphthylamines the salts of the homologous arylamidoacetic acids. From the salts you can get the free ones Acids win in a known way.
Zum Zwecke der technischen Ausführung des neuen Verfahrens kann man z. B. etwa in folgender Weise arbeiten:For the purpose of technical implementation of the new process you can, for. B. about in work like this:
In einem mit Rückflufskühler und Rührwerk versehenen Gefäfs werden unter guter Kühlung 75 Th. Formaldehyd von 40 pCt. mit einer wässrigen Lösung von 50 Th. Cyannatrium (98 pCt.) bezw. der äquivalenten Menge eines anderen Cyanalkalis oder eines Cyanerdalkalis gemischt; dazu fügt man 93 Th. Anilin und so viel Alkohol oder Holzgeist, dafs eine homogene Flüssigkeit entsteht. Um die Reaction einzuleiten, erwärmt man nun zweckmäfsig auf einem Wasserbade. Einmal eingeleitet, vollzieht sich die Reaction unter Entwicklung von Ammoniak rasch und glatt im Sinne obiger Gleichung. Ist die Ammoniakentwicklung beendet, so destillirt man den Alkohol bezw. Holzgeist ab und dampft die zurückbleibende wässrige Lösung von phenylamidoessigsaurem Natrium zur Trockne ein.In a vessel equipped with a reflux condenser and stirrer, the mixture is cooled well 75 Th. Formaldehyde of 40 pCt. with an aqueous solution of 50 Th. Cyano Sodium (98 pct.) Resp. the equivalent amount of another cyan alkali or a cyan alkali mixed; 93 Th. of aniline and so much alcohol or wood spirit are added to this that a homogeneous one Liquid is created. In order to initiate the reaction, it is now expedient to heat one Water bath. Once initiated, the reaction takes place with the evolution of ammonia quickly and smoothly in the sense of the above equation. If the evolution of ammonia has ended, so one distills the alcohol resp. Wood spirit and evaporates the remaining aqueous solution of sodium phenylamidoacetate to dryness.
Der oben erwähnte Zusatz von Alkohol bezw. Holzgeist ist nicht unbedingt erforderlich. Arbeitet man ohne denselben, so mufs zur Erzielung eines glatten Verlaufs der Reaction einmal für sehr gute Rührung gesorgt werden und dann läfst man zweckmäfsig die wässrige Lösung des Cyansalzes einfliefsen in das auf Wasserbadtemperatur erwärmte und gut durchgerührte Gemisch von Anilin und Formaldehyd.The above-mentioned addition of alcohol BEZW. Wood spirit is not essential. Is working if one does not do this, then in order to achieve a smooth course of the reaction one has to do it once very good stirring must be ensured and then it is expedient to let the watery one off Flow the solution of the cyan salt into the heated to water bath temperature and stirred well Mixture of aniline and formaldehyde.
Ersetzt man in obigem Beispiel das Anilin durch die äquivalenten Mengen von Toluidin, Xylidin oder Naphtylamin, so erhält man die Salze der bekannten Tolyl-, Xylyl- und Naphtylamidoessigsäuren. If in the above example the aniline is replaced by the equivalent amount of toluidine, Xylidine or naphthylamine, the salts of the known tolyl, xylyl and naphthylamidoacetic acids are obtained.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE135332C true DE135332C (en) |
Family
ID=403385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT135332D Active DE135332C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE135332C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036161A2 (en) * | 1980-03-19 | 1981-09-23 | BASF Aktiengesellschaft | Process for the preparation of alkali salts of phenyl glycine |
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0
- DE DENDAT135332D patent/DE135332C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036161A2 (en) * | 1980-03-19 | 1981-09-23 | BASF Aktiengesellschaft | Process for the preparation of alkali salts of phenyl glycine |
EP0036161A3 (en) * | 1980-03-19 | 1982-02-03 | Basf Aktiengesellschaft | Process for the preparation of alkali salts of phenyl glycine |
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