CH201181A - Process for the preparation of 3,3'-dimethoxy-3 ", 4,4 ', 4" - tetra-oxy-triphenylmethane. - Google Patents
Process for the preparation of 3,3'-dimethoxy-3 ", 4,4 ', 4" - tetra-oxy-triphenylmethane.Info
- Publication number
- CH201181A CH201181A CH201181DA CH201181A CH 201181 A CH201181 A CH 201181A CH 201181D A CH201181D A CH 201181DA CH 201181 A CH201181 A CH 201181A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dimethoxy
- triphenylmethane
- strong mineral
- mineral acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000002360 preparation method Methods 0.000 title claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- LHGVFZTZFXWLCP-UHFFFAOYSA-N guaiacol Chemical compound COC1=CC=CC=C1O LHGVFZTZFXWLCP-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 229960000583 acetic acid Drugs 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- 229960001867 guaiacol Drugs 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 3
- 239000011707 mineral Substances 0.000 claims 3
- 229940126601 medicinal product Drugs 0.000 claims 1
- IBGBGRVKPALMCQ-UHFFFAOYSA-N 3,4-dihydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1O IBGBGRVKPALMCQ-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229960003371 protocatechualdehyde Drugs 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000546339 Trioxys Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung von 3,3'-Dimethogy-3", 4,4', 4"-tetra-ogy-triphenylmethan. Das Hauptpatent betrifft ein Verfahren zur Herstellung von 3,3',8" - Trimethoxy- 4,4',4" - trioxy - triphenylmethan, nach wel chem dieser Stoff in reiner kristallisierter Form gewonnen werden kann. Es wurde nun gefunden, dass man in analoger Weise auch das 3,3'-Dimethoxy-3"-4,4',4"-tetraoxy-tri- phenylmethan darstellen kann.
Nach dem Verfahren der vorliegenden Erfindung wird Guajacol mit Protocatechualdehyd unter Ver wendung von sauren Kondensationsmitteln kondensiert. Als saure Kondensationsmittel können zum Beispiel mit Alkohol oder Eis essig verdünnte konzentrierte Schwefelsäure oder auch mit Alkohol oder Eisessig ge- nischte konzentrierte Salzsäure verwendet werden. Man kann aber auch in mit Wasser nicht mischbaren Lösungsmitteln, z.
B. mit Salz,#ü.nre;as gesättigtem Essigester, die Kondensation durchführen.
Da 3 Produkt des Verfahrens kann als Ausgangsstoff zur Darstellung von Farb stoffen und von Heilstoffen verwendet wer den. Es besitzt selbst antiseptische Eigen schaften.
<I>Beispiel:</I> 7 g Protokatechualdehyd und 12,4 g Guajacol werden in 15 cm' absolutem Al kohol gelöst und die gekühlte Lösung meh rere Stunden mit Salzsäuregas gesättigt. Nach Stehen giesst man auf 80 g Eis und gibt unter Kühlen und Schütteln soviel etwa 40%ige Natronlauge zu, bis das Gemisch auf Kongo nur schwach sauer ist. Nach Zu gabe von wenig Zinkpulver kocht man unter Rückfluss. Die hellgelbe Lösung wird jetzt mit Essigester ausgezogen.
Nach Abdestil- lieren des Esters kristallisiert man den Rück stand aus etwa 30 cm' absolutem Äther um. Das so erhaltene 3,4,4',4"-Tetraoxy-3',3"-di- methoxy - triphenylmethan kristallisiert in gleichmässigen farblosen Körnchen. Schmelz- punkt bei 197 . Das Produkt des Verfahrens ist eine neue Verbindung.
Process for the preparation of 3,3'-dimethogy-3 ", 4,4 ', 4" -tetra-ogy-triphenylmethane. The main patent relates to a process for the production of 3,3 ', 8 "- trimethoxy 4,4', 4" - trioxy - triphenylmethane, after wel chem this substance can be obtained in pure crystallized form. It has now been found that 3,3'-dimethoxy-3 "-4,4 ', 4" -tetraoxy-triphenylmethane can also be prepared in an analogous manner.
According to the method of the present invention, guaiacol is condensed with protocatechualdehyde using acidic condensing agents. As acidic condensing agents, for example, concentrated sulfuric acid diluted with alcohol or glacial acetic acid or else concentrated hydrochloric acid mixed with alcohol or glacial acetic acid can be used. But you can also use water-immiscible solvents such.
B. with salt, # ü.nre; as saturated ethyl acetate, carry out the condensation.
The 3 product of the process can be used as a starting material for the representation of dyes and medicinal substances. It itself has antiseptic properties.
<I> Example: </I> 7 g protocatechualdehyde and 12.4 g guaiacol are dissolved in 15 cm 'absolute alcohol and the cooled solution is saturated with hydrochloric acid gas for several hours. After standing, the mixture is poured onto 80 g of ice and, with cooling and shaking, enough about 40% sodium hydroxide solution is added until the mixture is only slightly acidic in the Congo. After adding a little zinc powder, the mixture is refluxed. The light yellow solution is now extracted with ethyl acetate.
After the ester has been distilled off, the residue is recrystallized from about 30 cm of absolute ether. The 3,4,4 ', 4 "-tetraoxy-3', 3" -dimethoxy-triphenylmethane obtained in this way crystallizes in uniform, colorless granules. Melting point at 197. The product of the process is a new compound.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU201181X | 1936-03-04 | ||
| CH195653T | 1937-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH201181A true CH201181A (en) | 1938-11-15 |
Family
ID=25722772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH201181D CH201181A (en) | 1936-03-04 | 1937-03-03 | Process for the preparation of 3,3'-dimethoxy-3 ", 4,4 ', 4" - tetra-oxy-triphenylmethane. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH201181A (en) |
-
1937
- 1937-03-03 CH CH201181D patent/CH201181A/en unknown
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