CH143242A - 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
- CH143242A CH143242A CH143242DA CH143242A CH 143242 A CH143242 A CH 143242A CH 143242D A CH143242D A CH 143242DA CH 143242 A CH143242 A CH 143242A
- Authority
- CH
- Switzerland
- Prior art keywords
- compound
- preparation
- ring system
- hydrogenated ring
- maleic anhydride
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung einer Verbindung mit hydriertem Itingsystem. Uegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung einer Verbindung von folgender Konstitution
EMI0001.0004
welches dadurch gekennzeichnet ist, dass man Maleinsäureanhydrid mit Muconsäurediäthyl- ester kondensiert. Die neue Verbindung soll zur Herstellung von Farbstoffen, pharma zeutischen Produkten und Riechstoffen ver wendet werden.
Beispiel: 20 Teile Muconsäure-diäthylester werden mit 10 Teilen Maleinsäureanhydrid im Rohr eingeschlossen und 4. Stunden auf<B>1.000</B> er hitzt. Die feste Kristallmasse wird aus Eis- essig oder Chlorbenzol umkristallisiert. Das neue Produkt bildet feine weisse Nadeln vom Schmelzpunkt<B>198-2000</B> C.
Process for the preparation of a compound with a hydrogenated iting system. The subject of this additional patent is a process for the preparation of a compound of the following constitution
EMI0001.0004
which is characterized in that maleic anhydride is condensed with muconic acid diethyl ester. The new compound is to be used for the manufacture of dyes, pharmaceutical products and fragrances.
Example: 20 parts of muconic acid diethyl ester are enclosed in the tube with 10 parts of maleic anhydride and heated to <B> 1,000 </B> for 4 hours. The solid crystal mass is recrystallized from glacial acetic acid or chlorobenzene. The new product forms fine white needles with a melting point <B> 198-2000 </B> C.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH143242T | 1928-11-19 | ||
| CH141523T | 1930-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH143242A true CH143242A (en) | 1930-10-31 |
Family
ID=25713708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH143242D CH143242A (en) | 1928-11-19 | 1928-11-19 | Process for the preparation of a compound with a hydrogenated ring system. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH143242A (en) |
-
1928
- 1928-11-19 CH CH143242D patent/CH143242A/en unknown
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