CH281964A - Process for the preparation of a heterocyclic carbamic acid derivative. - Google Patents
Process for the preparation of a heterocyclic carbamic acid derivative.Info
- Publication number
- CH281964A CH281964A CH281964DA CH281964A CH 281964 A CH281964 A CH 281964A CH 281964D A CH281964D A CH 281964DA CH 281964 A CH281964 A CH 281964A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid derivative
- carbamic acid
- preparation
- heterocyclic
- formula
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
- C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D277/34—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/63—One oxygen atom
- C07D213/68—One oxygen atom attached in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Description
Verfahren zur Herstellung eines heterocyclischen Carbaminsäurederivates. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines heterocycli- schen Carbaminsäurederivates. Das Verfahren ist dadurch gekennzeichnet, da.ss man eine Ver bindung der Formel
EMI0001.0008
mit einem Carbaminsäurederivat der Formel
EMI0001.0010
umsetzt, worin X und Y zwei sich im Verlaufe des Verfahrens abspaltende Reste bedeuten.
Die erhaltene neue Verbindung, das 2,6-Di- methyl-pyridyl- (4) -diäthylcarbamat, siedet unter 0,05 mm Druck bei 125 bis 127 . Sie soll als Wirkstoff für Schädlingsbekämpfungsmit tel Verwendung finden.
<I>Beispiel:</I> 12,3 Teile 4-Oxy-2,6-dimethyl-pyridin wer den in das Kaliumsalz übergeführt, indem man die benzolische Suspension unter Zusatz von 14 Teilen Pottasche einige Stunden der azeotropen Destillation mittels eines Separa- tors in der Weise unterwirft, dass das Benzol zum Reaktionsgemisch zurückfliesst, während das abgeschiedene Wasser abgetrennt wird.
Nach Zufügen von 14 Teilen Diäthy lcarbamin- säurechlorid erhitzt man weiter etwa 12 Stun- den unter Rückfluss und saugt hierauf vom anorganischen Salz ab. Man destilliert das Benzol ab und fraktioniert den Rückstand im Vakuum. Das 2,6-Dimethyl-pyridyl- (4) -di- äthylcarbamat geht bei einem Druck von 0,05 mm bei 125 bis 127 als farbloses Öl über, das beim Erkalten erstarrt.
Process for the preparation of a heterocyclic carbamic acid derivative. The present patent relates to a process for the preparation of a heterocyclic carbamic acid derivative. The method is characterized in that one is a compound of the formula
EMI0001.0008
with a carbamic acid derivative of the formula
EMI0001.0010
converts, where X and Y are two radicals split off in the course of the process.
The new compound obtained, 2,6-dimethylpyridyl- (4) -diethylcarbamate, boils at 125 to 127 under 0.05 mm pressure. It should be used as an active ingredient for pest control agents.
<I> Example: </I> 12.3 parts of 4-oxy-2,6-dimethyl-pyridine are converted to the potassium salt by adding 14 parts of potash to the benzene suspension for a few hours of azeotropic distillation using a Separa - subjects in such a way that the benzene flows back to the reaction mixture, while the separated water is separated off.
After adding 14 parts of diethylcarbamic acid chloride, the mixture is refluxed for a further 12 hours and the inorganic salt is then suctioned off. The benzene is distilled off and the residue is fractionated in vacuo. The 2,6-dimethyl-pyridyl- (4) -diethylcarbamate passes over at a pressure of 0.05 mm at 125 to 127 as a colorless oil which solidifies on cooling.
Claims (1)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2681915X | 1949-08-22 | ||
CH2681879X | 1949-08-22 | ||
CH2694712X | 1949-08-22 | ||
CH2681914X | 1949-08-22 | ||
CH2681916X | 1949-08-22 | ||
CH281964T | 1949-08-26 | ||
GB3001049A GB681376A (en) | 1949-11-23 | 1949-11-23 | Manufacture of heterocyclic carbamic acid derivatives and their use as agents for combating pests |
Publications (1)
Publication Number | Publication Date |
---|---|
CH281964A true CH281964A (en) | 1952-03-31 |
Family
ID=32303880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH281964D CH281964A (en) | 1949-08-22 | 1949-08-26 | Process for the preparation of a heterocyclic carbamic acid derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH281964A (en) |
-
1949
- 1949-08-26 CH CH281964D patent/CH281964A/en unknown
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