CH299707A - Process for the production of a condensation product. - Google Patents
Process for the production of a condensation product.Info
- Publication number
- CH299707A CH299707A CH299707DA CH299707A CH 299707 A CH299707 A CH 299707A CH 299707D A CH299707D A CH 299707DA CH 299707 A CH299707 A CH 299707A
- Authority
- CH
- Switzerland
- Prior art keywords
- chloro
- phenyl
- condensation product
- treated
- production
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/64—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and sulfur atoms, not being part of thio groups, bound to the same carbon skeleton
- C07C323/66—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and sulfur atoms, not being part of thio groups, bound to the same carbon skeleton containing sulfur atoms of sulfo, esterified sulfo or halosulfonyl groups, bound to the carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Kondensationsproduktes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Konden- "ationsproduktes der wahrscheinliehen Formel
EMI0001.0004
dadurch gekennzeichnet, dass man N-2-(p- Chlor -phenylmer capto)
- 5 - chlor -pheiiyl-N'-3- trifluormethyl-4-ehlor-phenyl-harnstoff mit einem Sulfonierungsmittel behandelt und die entstandene Sulfonsäure mit einer Natrium- verbindung in das Natriumsalz überführt.
Als Sulfonieriungsmittel kommen zum Bei- ,spiel in Frage: Oleiun, konz. Schwefelsäure oder Chlorsulfonsäure.
Beispielsweise lässt man auf den aus 3-Tri- fluoianethyl-4-chlor-phenyl-isocyanat und 2- (p-Chlor-phenylmercapto)-5-chlor-anilin er haltenen N-2-(p-Chlor-phenylmercapto)-5- ehlor - phenyl - N'-3-trifluormethyl-4-chlor-phe- nyl-harnstoff (F:165-7) Schwefelsäuremono- hydrat zwischen -7 und + 12 einwirken.
Hierbei wird ein Sulfonsäurerest eingeführt; nach Neutralisation mit konz. Natronlauge entsteht wahrscheinlich die Verbindung der Formel I.
Statt Sehwefelsäutremonoliydrat kann man auch Oleum oder Chlorsulfonsäure verwenden. Bei letzterem arbeitet man vorzugsweise in einem Lösungsmittel, wie z. B. Nitrobenzol.
Das neue Kondensationsprodukt bildet ein helles, in heissem Wasser gut lösliches Kristall- pulver, das als Mottenschutzmittel verwendet werden kann.
<I>Beispiel:</I> 100 g Schwefelsäuremonohydrat werden auf -7 gekühlt und -unter Rühren langsam 20 g N-2-(p-Chlor-phenyl-mercapto)-5-chlor- pheny 1- N'-4- ehlor-3- (trifluormethyl) -phenyl- harnstoff eingetragen, so dass die Temperatur nicht über + 12 steigt. Nach dem Eintragen wird noch ungefähr 1 Stunde bei dieser Tem peratur weitergerührt, bis eine Probe des Re aktionsgemisches in warmer verdünnter Lauge klar löslich ist.
Darauf wird das Reaktionsgemisch auf Eis gegossen und mit konz. Natronlauge schwach alkalisch gestellt, wobei die Verbindung als Öl ausfällt. Die überstehende Lösung wird vom Öl abdekantiert und der Rückstand, in 3500 cms 95 igem Wasser gelöst, mit wenig Tierkohle filtriert und mit 100 cms gesättigter Kochsalzlösung ausgesalzen. Ausbeute: 15 g.
Das neue Kondensationsprodukt bildet nach dem Trocknen und Mahlen ein helles, in heissem Wasser gut lösliches Pulver.
Process for the production of a condensation product. The subject of the present patent is a process for the preparation of a condensation product of the probable formula
EMI0001.0004
characterized in that N-2- (p-chloro-phenylmer capto)
- 5 - chloro-phenyl-N'-3-trifluoromethyl-4-chloro-phenyl-urea treated with a sulphonating agent and the sulphonic acid formed is converted into the sodium salt with a sodium compound.
As sulfonating agents come, for example, in question: Oleiun, conc. Sulfuric acid or chlorosulfonic acid.
For example, the N-2- (p-chloro-phenylmercapto) -5 obtained from 3-trifluoroianethyl-4-chloro-phenyl isocyanate and 2- (p-chloro-phenylmercapto) -5-chloro-aniline is obtained - Ehlor - phenyl - N'-3-trifluoromethyl-4-chloro-phenyl-urea (F: 165-7) sulfuric acid monohydrate between -7 and +12 act.
A sulfonic acid residue is introduced here; after neutralization with conc. Sodium hydroxide is likely to form the compound of formula I.
Instead of sulfuric acid monoliydrate, oleum or chlorosulfonic acid can also be used. In the latter one works preferably in a solvent, such as. B. nitrobenzene.
The new condensation product forms a light-colored crystal powder which is readily soluble in hot water and which can be used as a moth repellent.
<I> Example: </I> 100 g of sulfuric acid monohydrate are cooled to -7 and -with stirring slowly 20 g of N-2- (p-chloro-phenyl-mercapto) -5-chloro-pheny 1- N'-4- Chlorine-3- (trifluoromethyl) -phenyl-urea entered so that the temperature does not rise above +12. After entering, stirring is continued for about 1 hour at this temperature until a sample of the reaction mixture is clearly soluble in warm, dilute lye.
The reaction mixture is then poured onto ice and treated with conc. Sodium hydroxide solution made weakly alkaline, whereby the compound precipitates as an oil. The supernatant solution is decanted from the oil and the residue, dissolved in 3500 cms of 95% water, filtered with a little animal charcoal and salted out with 100 cms of saturated saline solution. Yield: 15 g.
After drying and grinding, the new condensation product forms a light-colored powder that is easily soluble in hot water.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH299707T | 1950-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH299707A true CH299707A (en) | 1954-06-30 |
Family
ID=4490402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH299707D CH299707A (en) | 1950-04-29 | 1950-04-29 | Process for the production of a condensation product. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH299707A (en) |
-
1950
- 1950-04-29 CH CH299707D patent/CH299707A/en unknown
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