AT17452B - Process for the preparation of trimethyl cyclohexenonecarboxylic acid ester. - Google Patents
Process for the preparation of trimethyl cyclohexenonecarboxylic acid ester.Info
- Publication number
- AT17452B AT17452B AT17452DA AT17452B AT 17452 B AT17452 B AT 17452B AT 17452D A AT17452D A AT 17452DA AT 17452 B AT17452 B AT 17452B
- Authority
- AT
- Austria
- Prior art keywords
- acid ester
- trimethyl
- cyclohexenonecarboxylic
- preparation
- parts
- Prior art date
Links
- 239000002253 acid Substances 0.000 title claims description 4
- 150000002148 esters Chemical class 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims 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 claims description 2
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 claims description 2
- -1 isopropylidene acetoacetic ester Chemical compound 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- YYPNJNDODFVZLE-UHFFFAOYSA-N 3-methylbut-2-enoic acid Chemical compound CC(C)=CC(O)=O YYPNJNDODFVZLE-UHFFFAOYSA-N 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- BDKZHNJTLHOSDW-UHFFFAOYSA-N [Na].CC(O)=O Chemical compound [Na].CC(O)=O BDKZHNJTLHOSDW-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Österreichische PATENTSCHRIFT Ni. 17452. FIRMA FARBWERKE voRM. MEISTER, LUCIUS & BRÜNING
IN HÖCHST A. M.
Verfahren zur Darstellung von Trimethyl-Cyclohexenonkarbonsäureester.
Es wurde gefunden, dass Natriumazetessigester sich mit Isopropylidenazetessigester zu Trimethyl-Cyclohexenonkarbonsäureester kondensiert, im Sinne der (rtoichung :
EMI1.1
Beispiel : 23 Teile Natrium werden in 250 Teile absolutem Alkohol gelöst und 130 Teile Azetessigester hinzugefügt. Nach dem Erkalten versetzt man das Gemisch mit 1 í () Teile Isopropylidcnazetessigester und überlässt es mehrere Wochen bei niederer Temperatur sich selbst, wobei sich äthylkohlensaures Natrium als Pulver oder in Kristallkrusten abscheidet.
Die alkoholische Lösung wird nunmehr mit verdünnter Schwefelsäure unter Kühlen neutralisiert und der Alhohol bei gelinder Wärme im Vakuum abdestilliert.
EMI1.2
Der Trimethyl-Cyclohexenonkarbonsäureester soll als Vorprodukt für die Darstellung von Riechstoffen Verwendung finden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Austrian PATENT Letters Ni. 17452. FIRMA FARBWERKE vorRM. MEISTER, LUCIUS & BRÜNING
IN HÖCHST A. M.
Process for the preparation of trimethyl cyclohexenonecarboxylic acid ester.
It was found that sodium acetic acid ester condenses with isopropylidene acetic acid ester to form trimethyl cyclohexenone carboxylic acid ester, in the sense of the (red color:
EMI1.1
Example: 23 parts of sodium are dissolved in 250 parts of absolute alcohol and 130 parts of acetoacetic ester are added. After cooling, the mixture is mixed with 1 yl parts of isopropylidacetacetate and left for several weeks at a low temperature, with sodium carbonate being deposited as a powder or in crystal crusts.
The alcoholic solution is then neutralized with dilute sulfuric acid while cooling and the alcohol is distilled off in vacuo with gentle heat.
EMI1.2
The trimethyl cyclohexenonecarboxylic acid ester is intended to be used as a preliminary product for the preparation of fragrances.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT17452T | 1903-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT17452B true AT17452B (en) | 1904-09-10 |
Family
ID=3520085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT17452D AT17452B (en) | 1903-06-02 | 1903-06-02 | Process for the preparation of trimethyl cyclohexenonecarboxylic acid ester. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT17452B (en) |
-
1903
- 1903-06-02 AT AT17452D patent/AT17452B/en active
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