CH281947A - 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
- CH281947A CH281947A CH281947DA CH281947A CH 281947 A CH281947 A CH 281947A CH 281947D A CH281947D A CH 281947DA CH 281947 A CH281947 A CH 281947A
- Authority
- CH
- Switzerland
- Prior art keywords
- carbamic acid
- acid derivative
- preparation
- heterocyclic
- methyl
- 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
- 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)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyridine Compounds (AREA)
Description
Verfahren zur Herstellung eines heteroeyclischen Carbaminsäurederivates. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines heterocycli- schen Carbaminsäurederivates. Das Verfahren ist dadurch gekennzeichnet, dass man eine Ver bindung der Formel
EMI0001.0006
mit einem Carbaminsäurederivat der Formel
EMI0001.0008
umsetzt, worin X und Y zwei sich im Verlaufe des Verfahrens abspaltende Reste bedeuten.
Die erhaltene neue Verbindung, das 6-Me- thyl-2-pyronyl-(4)-dimethylcarbamat, siedet unter 0,3 mm Druck bei 150 bis 152 . Sie soll als Wirkstoff für Schädlingsbekämpfungsmit tel Verwendung finden.
Beispiel: Zur Cberführung in das Kaliumsalz wer den 12,6 Teile 6-Methyl-pyronon-(2,4) in 100 Teilen Aceton gelöst und mit 8 Teilen Calium- carbonat zum Sieden erhitzt, so da.ss 50 Teile Aceton abdestillieren. Dann lässt man auf 50 abkühlen, gibt 50 Teile Aceton und 12 Teile Dimethylcarbaminsäurechlorid hinzu und er hitzt 24 Stunden zum Sieden.
Die Aufarbei tung des Reaktionsproduktes erfolgt durch Trennung der Acetonlösung von den anorga nischen Salzanteilen und von eventuell nicht umgesetztem Ausgangsmaterial. Das 6-Methyl- 2-pyronyl-(4)-dimethylcarbamat siedet unter 0,3 mm Druck bei<B>150</B> bis 152 .
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
EMI0001.0006
with a carbamic acid derivative of the formula
EMI0001.0008
converts, where X and Y are two radicals split off in the course of the process.
The new compound obtained, 6-methyl-2-pyronyl- (4) -dimethylcarbamate, boils under 0.3 mm pressure at 150 to 152. It should be used as an active ingredient for pest control agents.
Example: To convert into the potassium salt, 12.6 parts of 6-methylpyronone (2,4) are dissolved in 100 parts of acetone and heated to boiling with 8 parts of potassium carbonate, so that 50 parts of acetone are distilled off. The mixture is then allowed to cool to 50, 50 parts of acetone and 12 parts of dimethylcarbamic acid chloride are added and it is heated to the boil for 24 hours.
The reaction product is worked up by separating the acetone solution from the inorganic salt components and any unreacted starting material. The 6-methyl-2-pyronyl- (4) -dimethylcarbamate boils under 0.3 mm pressure at <B> 150 </B> to 152.
Claims (1)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2681914X | 1949-08-22 | ||
CH2681879X | 1949-08-22 | ||
CH2681916X | 1949-08-22 | ||
CH2694712X | 1949-08-22 | ||
CH2681915X | 1949-08-22 | ||
CH281947T | 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 |
---|---|
CH281947A true CH281947A (en) | 1952-03-31 |
Family
ID=32303869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH281947D CH281947A (en) | 1949-08-22 | 1949-08-26 | Process for the preparation of a heterocyclic carbamic acid derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH281947A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2915398A (en) * | 1955-11-30 | 1959-12-01 | Merck & Co Inc | beta, delta-dihydroxy-beta-methylvaleric and derivatives thereof as growth promoters |
-
1949
- 1949-08-26 CH CH281947D patent/CH281947A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2915398A (en) * | 1955-11-30 | 1959-12-01 | Merck & Co Inc | beta, delta-dihydroxy-beta-methylvaleric and derivatives thereof as growth promoters |
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