CH129730A - Process for the preparation of a polysulfide ester of an aromatic carboxylic acid. - Google Patents
Process for the preparation of a polysulfide ester of an aromatic carboxylic acid.Info
- Publication number
- CH129730A CH129730A CH129730DA CH129730A CH 129730 A CH129730 A CH 129730A CH 129730D A CH129730D A CH 129730DA CH 129730 A CH129730 A CH 129730A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- carboxylic acid
- aromatic carboxylic
- ester
- acid
- Prior art date
Links
- 150000002148 esters Chemical class 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 title claims description 4
- 229920001021 polysulfide Polymers 0.000 title claims description 4
- 239000005077 polysulfide Substances 0.000 title claims description 4
- 150000008117 polysulfides Polymers 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 26
- 239000003208 petroleum Substances 0.000 claims description 7
- RSFDFESMVAIVKO-UHFFFAOYSA-N 3-sulfanylbenzoic acid Chemical compound OC(=O)C1=CC=CC(S)=C1 RSFDFESMVAIVKO-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 235000019198 oils Nutrition 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- -1 sulfur halide Chemical class 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 239000012021 ethylating agents Substances 0.000 claims description 2
- 238000010899 nucleation Methods 0.000 claims description 2
- 239000004006 olive oil Substances 0.000 claims description 2
- 235000008390 olive oil Nutrition 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000001225 therapeutic effect Effects 0.000 claims description 2
- 241000287181 Sturnus vulgaris Species 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- PXJJSXABGXMUSU-UHFFFAOYSA-N disulfur dichloride Chemical compound ClSSCl PXJJSXABGXMUSU-UHFFFAOYSA-N 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- CAIKKJIIZHDMSX-UHFFFAOYSA-N ethyl 2-sulfanylbenzoate Chemical compound CCOC(=O)C1=CC=CC=C1S CAIKKJIIZHDMSX-UHFFFAOYSA-N 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Polysulfidesters einer aromatisehen Car bonsäure. Üegenstand vorliegender Erfindung ist ein Verfahren zur Darstellung eines Poly sulfid- esters einer aromatischen Carbonsäure, da durch gekennzeichnet, dass man 3-Merkapto- benzoesäure, ein Äthylierungsmittel und ein Schwefelhalogenid aufeinander einwirken lässt.
Man kann zum Beispiel die 3-Merkapto- benzoesäure zunächst nach den üblichen Me thoden in ihren Äthylester überführen und diesen durch Umsetzung mit einem Schwefel- halogenid, zum Beispiel Schwefelchlorid, SCIs, in das Di-Benzoesäureäthylester-3,3'- trisulfid umwandeln, oder aber zunächst durch Umsetzung der 3-Merkaptobenzoesäure mit einem Schwefelhalogenid, zum Beispiel Schwe felchlorid, das Dibenzoesäure-3,
3'-trisulfid gewinnen und dieses in üblicher Weise ver- estern.
Der Reaktionsverlauf lässt sich durch fol gende Formeln veranschaulichen
EMI0001.0027
Das so erhaltene Di-Berizoesäureäthyl- ester-3,3'-trisulfid ist bei gewöhnlicher Tem peratur ein dickflüssiges, gelbes Öl, das beim Impfen oder Abkühlen zu einer gelblich weissen Kristallmasse vom F. P. 34-36 erstarrt; es ist in den meisten organischen Lösungsmitteln leicht; in Petroläther etwas schwerer, in Olivenöl ziemlich gut löslich.
Das neue Produkt soll zu therapeutischen Zwecken verwendet werden.
Beispiel 30 Gewichtsteile 3-Merkaptobenzoesäure werden in 280 Gewichtsteilen absolutem Äthylalkohol, der 4 0,lo HCl-gas enthält, ge löst und einige Stunden am Rückfluss ge kocht. Hierauf wird der Alkohol zum grössern Teil abdestilliert, den Rest giesst man in Wasser, nimmt den ausgeschiedenen Ester in Äther auf, schüttelt mit Bicarbonat, trocknet mit Natriumsulfat und verdampft den Äther. Der Ester wird im Vakuum destilliert; er siedet bei einem Druck von 11 mm bei<B>1370</B> und schmilzt bei 60.
12 Gewichtsteile des so erhaltenen Merkaptobenzoesäureäthylesters werden in ungefähr dem gleichen Volumen Petroläther gelöst und allmählich unter Kühlung mit Gewichtsteilen Schwefelchlorid in Petrol- ätherlösung versetzt. Das Trisulfid fällt zu nächst als Öl aus, wird jedoch beim Reiben in der Kälte kristallinisch. Es kann durch Aufnehmen in Äther, Schütteln der ätheri schen Lösung mit Wasser, Trocknung der Ätherschicht mit Chlorcalcium und Abdunsten des Äthers gereinigt werden.
<I>Beispiel 2:</I> 10 Gewichtsteile 3-Merkaptobenzoesäure werden in wenig Äther gelöst und in die gekühlte Lösung unter Rühren allmählich etwa 3,5 Gewichtsteile Schwefelchlorid, in Petroläther gelöst, zutropfen gelassen. Das entstehende Trisulfid scheidet sich- zum gröss ten Teil ab. Die Abscheidung wird durch Zugabe von Petroläther und Kühlung ver vollständigt. Man filtriert, wäscht mit Petrol- äther und trocknet.
Nach dem Umkristalli- sieren aus heissem Alkohol erhält man das Dibe.nzoesäure-3,3'-trisulfid in Form grün gelblicher Kristallnädelchen vom F. P. 203 .
Das so erhaltene Dibenzoesäure-3,3'-tri- sulfid wird in absolutem Alkohol gelöst, HCl-gas eingeleitet, 'die Lösung auf dem Wasserbad 3 Stunden erwärmt, der-Alkohol teilweise - abdestilliert und die konzentrierte Lösung im Vakuum über Natronkalk von den Resten von Alkohol und Säure befreit. Es wird ein gelbliches Öl erhalten, das in seiner Zusammensetzung und seinen Eigen schaften mit dem nach Beispiel 1 erhaltenen Produkt identisch ist.
Process for the preparation of a polysulfide ester of an aromatic carboxylic acid. The subject matter of the present invention is a method for the preparation of a polysulfide ester of an aromatic carboxylic acid, characterized in that 3-mercaptobenzoic acid, an ethylating agent and a sulfur halide are allowed to act on one another.
For example, 3-mercaptobenzoic acid can first be converted into its ethyl ester by the usual methods and this can be converted into the di-benzoic acid ethyl ester 3,3'-trisulfide by reaction with a sulfur halide, for example sulfur chloride, SCIs, or first by reacting 3-mercaptobenzoic acid with a sulfur halide, for example sulfur chloride, dibenzoic acid-3,
Obtain 3'-trisulfide and esterify it in the usual way.
The course of the reaction can be illustrated by the following formulas
EMI0001.0027
The di-berizoic acid ethyl ester-3,3'-trisulfide obtained in this way is a viscous, yellow oil at normal temperature, which solidifies to a yellowish white crystal mass of F. P. 34-36 on seeding or cooling; it is light in most organic solvents; Slightly more difficult in petroleum ether, fairly soluble in olive oil.
The new product is intended to be used for therapeutic purposes.
Example 30 parts by weight of 3-mercaptobenzoic acid are dissolved in 280 parts by weight of absolute ethyl alcohol containing 40, lo HCl gas and refluxed for a few hours. Most of the alcohol is then distilled off, the rest is poured into water, the ester which has separated out is taken up in ether, shaken with bicarbonate, dried with sodium sulfate and the ether evaporated. The ester is distilled in vacuo; it boils at <B> 1370 </B> at a pressure of 11 mm and melts at 60.
12 parts by weight of the ethyl mercaptobenzoate obtained in this way are dissolved in approximately the same volume of petroleum ether and parts by weight of sulfur chloride in petroleum ether solution are gradually added while cooling. The trisulfide initially precipitates as an oil, but becomes crystalline when rubbed in the cold. It can be cleaned by absorbing it in ether, shaking the ethereal solution with water, drying the ether layer with calcium chloride and evaporating the ether.
Example 2: 10 parts by weight of 3-mercaptobenzoic acid are dissolved in a little ether and about 3.5 parts by weight of sulfur chloride dissolved in petroleum ether are gradually added dropwise to the cooled solution with stirring. The resulting trisulfide separates for the most part. The separation is completed by adding petroleum ether and cooling. It is filtered, washed with petroleum ether and dried.
After recrystallization from hot alcohol, the disulfide 3,3'-trisulfide is obtained in the form of yellowish green crystal needles from F. P. 203.
The dibenzoic acid-3,3'-trisulfide thus obtained is dissolved in absolute alcohol, HCl gas is introduced, the solution is heated on the water bath for 3 hours, the alcohol is partially distilled off and the concentrated solution is removed in vacuo over soda lime Remains of alcohol and acid removed. A yellowish oil is obtained which is identical in its composition and its properties to the product obtained in Example 1.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH129730T | 1927-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH129730A true CH129730A (en) | 1929-01-02 |
Family
ID=4388130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH129730D CH129730A (en) | 1927-05-27 | 1927-05-27 | Process for the preparation of a polysulfide ester of an aromatic carboxylic acid. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH129730A (en) |
-
1927
- 1927-05-27 CH CH129730D patent/CH129730A/en unknown
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