CH253192A - Process for making an ester. - Google Patents
Process for making an ester.Info
- Publication number
- CH253192A CH253192A CH253192DA CH253192A CH 253192 A CH253192 A CH 253192A CH 253192D A CH253192D A CH 253192DA CH 253192 A CH253192 A CH 253192A
- Authority
- CH
- Switzerland
- Prior art keywords
- ester
- act
- reaction
- compound
- cinnamic acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/612—Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a six-membered aromatic ring in the acid moiety
- C07C69/618—Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a six-membered aromatic ring in the acid moiety having unsaturation outside the six-membered aromatic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Esters. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Esters. Das Verfahren ist dadurch gekennzeichnet, dass man eine Verbindung der Formel
EMI0001.0006
auf eine Verbindung der Formel
EMI0001.0008
worin X und Y reaktionsfähige, mit Aus nahme eines in einem von ihnen enthaltenen Sauerstoffatoms sich bei der Reaktion ab spaltende Reste bedeuten, einwirken lässt. Die entstandene neue Verbindung, der Zimt- säure-a-isoamyl-benzylester,
siedet bei 175 bis 177 unter einem Druck von 0,55 mm. Sie soll als Arzneimittel Verwendung finden. <I>Beispiel:</I> 16 Teile Zimtsäurechlorid werden mit 18 Teilen a-Isoamyl-benzylalkohol in Gegen wart von 8 Teilen Pyridin umgesetzt. Man erhält so den Zimtsäureester des a-Isoamyl- benzylalkohols, der unter einem Druck von 0,55 mm bei 175-177 siedet.
3Zan kann auch ohne Zusatz von Pyridin arbeiten. In diesem Falle wird erhitzt, bis die Chlorwasserstoffentwicklung beendet ist.
Statt vom Zimtsäurechlorid kann man auch vom Anhydrid oder von einem Ester der Zimtsäure mit einem niederen Alkohol ausgehen und diese mit a-Isoamyl-benzyl- alkohol umsetzen; oder man verestert die Zimtsäure mit a-Isoamyl-benzylalkohol in Gegenwart eines Kondensationsmittels, wie Halogenwasserstoffsäure oder Schwefelsäure.
Zum gleichen Endprodukt gelangt man ferner durch Einwirkenlassen von einem zimtsauren Salz auf einen reaktionsfähigen Ester des a-Isoamyl-benzylalkohols, wie z. B. einen Halogenwasserstoffsäureeste:r oder einen aromatischen Sulfonsäureester.
Process for making an ester. The present patent is a process for the preparation of an ester. The process is characterized in that a compound of the formula
EMI0001.0006
to a compound of the formula
EMI0001.0008
wherein X and Y are reactive, with the exception of an oxygen atom contained in one of them can mean cleaving radicals in the reaction, can act. The resulting new compound, the cinnamic acid a-isoamyl-benzyl ester,
boils at 175 to 177 under a pressure of 0.55 mm. It should be used as a medicine. <I> Example: </I> 16 parts of cinnamic acid chloride are reacted with 18 parts of α-isoamylbenzyl alcohol in the presence of 8 parts of pyridine. This gives the cinnamic acid ester of α-isoamylbenzyl alcohol, which boils at 175-177 under a pressure of 0.55 mm.
3Zan can also work without the addition of pyridine. In this case, the mixture is heated until the evolution of hydrogen chloride has ceased.
Instead of the cinnamic acid chloride one can also start from the anhydride or from an ester of cinnamic acid with a lower alcohol and react this with α-isoamylbenzyl alcohol; or the cinnamic acid is esterified with α-isoamylbenzyl alcohol in the presence of a condensing agent such as hydrohalic acid or sulfuric acid.
The same end product is obtained by allowing a cinnamic acid salt to act on a reactive ester of α-isoamylbenzyl alcohol, such as. B. a hydrohalic acid ester: r or an aromatic sulfonic acid ester.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR922081X | 1943-11-26 | ||
CH253192T | 1944-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH253192A true CH253192A (en) | 1948-02-15 |
Family
ID=25729724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH253192D CH253192A (en) | 1943-11-26 | 1944-12-21 | Process for making an ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH253192A (en) |
-
1944
- 1944-12-21 CH CH253192D patent/CH253192A/en unknown
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