AT17751B - Process for the preparation of Indoxyl BEzw. its derivatives and homologues. - Google Patents
Process for the preparation of Indoxyl BEzw. its derivatives and homologues.Info
- Publication number
- AT17751B AT17751B AT17751DA AT17751B AT 17751 B AT17751 B AT 17751B AT 17751D A AT17751D A AT 17751DA AT 17751 B AT17751 B AT 17751B
- Authority
- AT
- Austria
- Prior art keywords
- indoxyl
- homologues
- derivatives
- preparation
- bezw
- Prior art date
Links
- PCKPVGOLPKLUHR-UHFFFAOYSA-N indoxyl Chemical group C1=CC=C2C(O)=CNC2=C1 PCKPVGOLPKLUHR-UHFFFAOYSA-N 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 claims description 3
- 229910001866 strontium hydroxide Inorganic materials 0.000 claims description 3
- 150000002333 glycines Chemical class 0.000 claims 2
- UCWMWNHWCYYDTD-UHFFFAOYSA-N N-carboxyglycine Chemical class OC(=O)CNC(O)=O UCWMWNHWCYYDTD-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 2
- ZGUNAGUHMKGQNY-ZETCQYMHSA-N L-alpha-phenylglycine zwitterion Chemical compound OC(=O)[C@@H](N)C1=CC=CC=C1 ZGUNAGUHMKGQNY-ZETCQYMHSA-N 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 229940097275 indigo Drugs 0.000 description 2
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 2
- DYPOHVRBXIPFIK-UHFFFAOYSA-N 2-(2-methylanilino)acetic acid Chemical compound CC1=CC=CC=C1NCC(O)=O DYPOHVRBXIPFIK-UHFFFAOYSA-N 0.000 description 1
- VKDFZMMOLPIWQQ-UHFFFAOYSA-N 2-acetamido-2-phenylacetic acid Chemical compound CC(=O)NC(C(O)=O)C1=CC=CC=C1 VKDFZMMOLPIWQQ-UHFFFAOYSA-N 0.000 description 1
- IPSFAGOTHDYEJB-UHFFFAOYSA-N [K].OC(=O)C(N)C1=CC=CC=C1 Chemical compound [K].OC(=O)C(N)C1=CC=CC=C1 IPSFAGOTHDYEJB-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical class [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
Description
<Desc/Clms Page number 1>
Österreichische PATENTSCHRIFT Nro 17751.
FIRMA KINZLBERGER & COMP. IN PRAG.
Verfahren zur Darstellung von Indoxyl bezw. dessen Derivaten und Homologen.
Aus Phenylglycin ist bekanntlich durch Schmelzen mit Atzalkalien eine gute Ausbeute an Indoxyl resp. Indigo nicht zu erreichen, man erhält etwa 8---10() der Theorie.
An Stelle von Ätzalkalien wurde Natriumamid für den genannten Zweck in Verwendung genommen und anschliessend an dieses ist eine ganze Reihe anderer Kondensationsmittel in Vorschlag gebracht worden, welchen allen gemeinsam ist, dass sie, wie Natrium- amid Wasser zerlegen oder es chemisch binden, wie: Natriumalkoholat, Bleinatrium,
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bekanntlich die Eigenschaft, Wasser zu vernichten, nicht haben. Da diese Hydroxyde aus den Schmelzen zum grössten Teil unverändert wieder zu gewinnen sind, gestaltet sich das Verfahren sehr einfach. Man verwendet die Hydroxyde vorteilhaft durch Schmelzen ent- wasser.
Zur Erläuterung der praktischen Durchführung des in Hede stehenden Verfahrens neigen die nachfolgenden Beispiele dienen :
1. Beispiel : 100 Teile Phenylglycinkalium (Phenyglycinbaryum oder ein anderes Salz) werden mit 300 Teilen entwässertem Baryumhydroxyd oder Strontiumhydroxyd hei Luft-
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raturen zwischen 250-400 C und darüber statt. Nach dem Auflösen der Schmelze in Wasser wird mit kohlensäurefreier Luft das Indoxy) oxydiert und der gebildete Indigo durch heisses Wasser vom Baryum- bezw. Strontiumhydroxyd getrennt, welch letzteres aus dem Filtrate kristallisiert und durch Umkristallisieren, Trocknen und Schmelzen wieder gebrauchsfähig gemacht werden kann.
Die Ausbeute an Indige ist etwa 300,/,) der Theorie.
2. Beispiel: Das Phonylglycin wird durch die gleiche Menge o-Tolylglycin ersetzt,
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3. Beispiel : Das Phenylglycin wird durch die äquivalente Menge Acetylphenylglycin ''rsetzt. Die Ausbeute ist dieselbe wie im ersten Beispiel.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Austrian PATENT NRO 17751.
COMPANY KINZLBERGER & COMP. IN PRAGUE.
Process for the preparation of Indoxyl BEzw. its derivatives and homologues.
From phenylglycine is known to be a good yield of indoxyl or by melting with caustic alkalis. Not reaching indigo, you get about 8 --- 10 () of theory.
Instead of caustic alkalis, sodium amide was used for the above-mentioned purpose, and a whole series of other condensation agents have been proposed, which all have in common that, like sodium amide, they decompose water or bind it chemically, such as sodium alcoholate , Lead sodium,
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as is well known, do not have the property of destroying water. Since these hydroxides can for the most part be recovered unchanged from the melts, the process is very simple. The hydroxides are advantageously used to dewater by melting.
The following examples tend to serve to explain the practical implementation of the process in Hede:
1st example: 100 parts of phenylglycine potassium (phenyglycine baryum or another salt) are mixed with 300 parts of dehydrated barium hydroxide or strontium hydroxide in hot air.
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temperatures between 250-400 C and above. After the melt has dissolved in water, the indoxy) is oxidized with carbonic acid-free air and the indigo formed is removed from the barium by hot water. Strontium hydroxide separated, which latter crystallizes from the filtrate and can be made usable again by recrystallization, drying and melting.
The yield of indige is about 300, /,) of theory.
2nd example: The phonylglycine is replaced by the same amount of o-tolylglycine,
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3rd example: The phenylglycine is replaced by the equivalent amount of acetylphenylglycine ''. The yield is the same as in the first example.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT17751T | 1903-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT17751B true AT17751B (en) | 1904-09-26 |
Family
ID=3520717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT17751D AT17751B (en) | 1903-02-26 | 1903-02-26 | Process for the preparation of Indoxyl BEzw. its derivatives and homologues. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT17751B (en) |
-
1903
- 1903-02-26 AT AT17751D patent/AT17751B/en active
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