CH143254A - Process for the preparation of a compound with a hydrogenated ring system. - Google Patents
Process for the preparation of a compound with a hydrogenated ring system.Info
- Publication number
- CH143254A CH143254A CH143254DA CH143254A CH 143254 A CH143254 A CH 143254A CH 143254D A CH143254D A CH 143254DA CH 143254 A CH143254 A CH 143254A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- compound
- ring system
- hydrogenated ring
- acrolein
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/38—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings
- C07C47/42—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings with a six-membered ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
- C07C45/69—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by addition to carbon-to-carbon double or triple bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cosmetics (AREA)
- Fats And Perfumes (AREA)
- Hydrogenated Pyridines (AREA)
Description
Verfahren zur Darstellung einer Verbindung mit hydriertem Ringsystem. Caegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines neuen Methyl- tetrahydrobenzaldebyds, welches dadurch ge kennzeichnet ist, dass man 1-Methylbutadien (Piperylen) finit Akrolein kondensiert. Die neue Verbindung soll zur Herstellung von Farbstoffen, pharmazeutischen Produkten und Riechstoffen verwendet werden.
<I>Beispiel:</I> 68 lxewichtsteile 1-3lethylbutadien (Pi- perylen) und 56 Gewichtsteile Akrolein wer den in einem Druckgefäss eine Stunde auf 100 C erhitzt. Hierauf werden das unver änderte Piperylen und Akrolein bei gewöhn lichem Druck abdestilliert. Beim Destillieren im Vakuum wird dann eine bei 13 mm Druck zwischen 55 C und 75 C siedende Fraktion erhalten. Die Hauptmenge zeigt nach zweimaliger Wiederholung der Destil lation den Siedepunkt Kp.<B>11</B> 59<B>0</B> C.
Der so rein erhaltene Aldehyd stellt ein wasserhelles, bewegliches, lichtbrechendes Öl dar. Er besitzt einen charakteristischen, an Isovaler- und Tetrahydrobenzaldehyd erin nernden Geruch.
Process for the preparation of a compound with a hydrogenated ring system. The subject of this additional patent is a process for the preparation of a new methyl-tetrahydrobenzaldebyd, which is characterized in that 1-methylbutadiene (piperylene) finitely condensed acrolein. The new compound is intended to be used in the manufacture of dyes, pharmaceutical products and fragrances.
<I> Example: </I> 68 parts by weight 1-3lethylbutadiene (perylene) and 56 parts by weight acrolein are heated to 100 C for one hour in a pressure vessel. The unchanged piperylene and acrolein are then distilled off at the usual pressure. When distilling in vacuo, a fraction boiling between 55 ° C. and 75 ° C. at a pressure of 13 mm is obtained. After the distillation has been repeated twice, the main amount shows the boiling point bp <B> 11 </B> 59 <B> 0 </B> C.
The pure aldehyde obtained in this way is a water-white, mobile, light-refracting oil. It has a characteristic odor reminiscent of isovaleric and tetrahydrobenzaldehyde.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH143254T | 1929-01-07 | ||
CH141523T | 1930-08-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH143254A true CH143254A (en) | 1930-10-31 |
Family
ID=25713720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH143254D CH143254A (en) | 1929-01-07 | 1929-01-07 | Process for the preparation of a compound with a hydrogenated ring system. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH143254A (en) |
-
1929
- 1929-01-07 CH CH143254D patent/CH143254A/en unknown
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