CH143263A - 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
- CH143263A CH143263A CH143263DA CH143263A CH 143263 A CH143263 A CH 143263A CH 143263D A CH143263D A CH 143263DA CH 143263 A CH143263 A CH 143263A
- Authority
- CH
- Switzerland
- Prior art keywords
- compound
- preparation
- ring system
- hydrogenated ring
- naphthoquinone
- 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 Ringsystem. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung einer Verbindung von folgender Konstitution
EMI0001.0001
welches dadurch gekennzeichnet ist, dass man α-Naphtochinon mit 1.3-Dimethyl-butadien kondensiert. Das neue Produkt soll zur Her stellung von Farbstoffen Verwendung finden. Beispiel: 3 Gewichtsteile a-Naphtochinon werden mit 5 Volumenteilen 1 .3-Dimethyl-butadien eine Stunde auf dem Wasserbade am Rück flusskühler erhitzt. Nachdem das überschüssige 1 .3-Dimethyl-butadien abdestilliert worden ist, erstarrt der Rückstand beim Erkalten zu einem festen Kuchen. Aus Methylalkohol erhält man die neue Verbindung in weissen Kristallen vom Schmelzpunkt 76 C.
Process for the preparation of a compound with a hydrogenated ring system. The subject of this additional patent is a method for the preparation of a compound of the following constitution
EMI0001.0001
which is characterized in that α-naphthoquinone is condensed with 1,3-dimethyl-butadiene. The new product is to be used to manufacture dyes. Example: 3 parts by weight of a-naphthoquinone are heated with 5 parts by volume of 1 .3-dimethyl-butadiene on a water bath on a reflux condenser for one hour. After the excess 1,3-dimethylbutadiene has been distilled off, the residue solidifies to a solid cake on cooling. The new compound is obtained from methyl alcohol in white crystals with a melting point of 76 C.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH143263T | 1929-01-21 | ||
| CH141523T | 1930-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH143263A true CH143263A (en) | 1930-10-31 |
Family
ID=25713729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH143263D CH143263A (en) | 1929-01-21 | 1929-01-21 | Process for the preparation of a compound with a hydrogenated ring system. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH143263A (en) |
-
1929
- 1929-01-21 CH CH143263D patent/CH143263A/en unknown
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