CH210970A - Process for the preparation of a urea derivative. - Google Patents
Process for the preparation of a urea derivative.Info
- Publication number
- CH210970A CH210970A CH210970DA CH210970A CH 210970 A CH210970 A CH 210970A CH 210970D A CH210970D A CH 210970DA CH 210970 A CH210970 A CH 210970A
- Authority
- CH
- Switzerland
- Prior art keywords
- urea derivative
- preparation
- water
- phosgene
- sulfonic acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/51—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton at least one of the nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Harnstoffderivates. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Harn stoffderivates der Formel
EMI0001.0002
dadurch gekennzeichnet, dass man 3,4-Dichlor- anilin-6-sulfonsäure mit Phosgen umsetzt. Das neue Harnstoffderivat bildet als Natriumsalz ein helles, gut wasserlösliches Pulver, das sich zur Verwendung als Mottenschutzmittel eignet.
<I>Beispiel:</I> 20 Teile 3,4-Dichloranilin-6-sulfonsäure werden in 260 Teilen Wasser mit der nöti gen Menge 10 %iger Sodalösung in Lösung gebracht. Hierauf gibt man 30 Teile kristalli siertes Natriumaeetat hinzu und leitet bei 40-50<B>0 0</B> Phosgen ein, bis eine Probe kein freies Amin mehr anzeigt. Hierauf wird das Natriumsalz des neuen Harnstoffderivates durch Zusatz von Kochsalz abgeschieden. Es wird nach dem Abtrennen, Trocknen und Mahlen als helles, gut wasserlösliches Pulver erhalten. Die Ausbeute ist quantitativ.
Process for the preparation of a urea derivative. The subject of the present patent is a process for the preparation of a urea derivative of the formula
EMI0001.0002
characterized in that 3,4-dichloroaniline-6-sulfonic acid is reacted with phosgene. The new urea derivative forms a pale, water-soluble powder as a sodium salt, which is suitable for use as a moth repellent.
<I> Example: </I> 20 parts of 3,4-dichloroaniline-6-sulfonic acid are dissolved in 260 parts of water with the necessary amount of 10% soda solution. 30 parts of crystallized sodium acetate are then added, and phosgene is passed in at 40-50 ° until a sample no longer shows any free amine. The sodium salt of the new urea derivative is then deposited by adding common salt. It is obtained as a pale, readily water-soluble powder after it has been separated off, dried and ground. The yield is quantitative.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH536047X | 1938-06-16 | ||
CH210970T | 1938-06-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH210970A true CH210970A (en) | 1940-08-15 |
Family
ID=25724959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH210970D CH210970A (en) | 1938-06-16 | 1938-06-16 | Process for the preparation of a urea derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH210970A (en) |
-
1938
- 1938-06-16 CH CH210970D patent/CH210970A/en unknown
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