DEF0016802MA - - Google Patents
Info
- Publication number
- DEF0016802MA DEF0016802MA DEF0016802MA DE F0016802M A DEF0016802M A DE F0016802MA DE F0016802M A DEF0016802M A DE F0016802MA
- Authority
- DE
- Germany
- Prior art keywords
- ecm
- chloromethyl
- new ester
- ester
- stirring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical class CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims 18
- 150000002148 esters Chemical class 0.000 claims 10
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 claims 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims 4
- 238000009835 boiling Methods 0.000 claims 3
- 241001454295 Tetranychidae Species 0.000 claims 2
- 239000007864 aqueous solution Substances 0.000 claims 2
- 239000000839 emulsion Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000010626 work up procedure Methods 0.000 claims 2
- 241001124076 Aphididae Species 0.000 claims 1
- 241000255925 Diptera Species 0.000 claims 1
- 238000005684 Liebig rearrangement reaction Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000749 insecticidal effect Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- -1 aromatic mercaptans Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
Tag der Anmeldung: 10. Februar 1955 Bekanntgemacht am 31. Oktober 1956Registration date: February 10, 1955. Advertised on October 31, 1956
DEUTSCHES PATENTAMTGERMAN PATENT OFFICE
Es ist bekannt, daß beim Einwirken von Salzsäure auf Paraformaldehyd in Gegenwart eines aliphatischen oder aromatischen Merkaptans die reaktionsfähigen a-Chlormethyl-alkyl- bzw. -aryl-thioäther entstehen.It is known that when hydrochloric acid acts on paraformaldehyde in the presence of an aliphatic or aromatic mercaptans, the reactive α-chloromethyl-alkyl or -aryl-thioethers are formed.
Es wurde nun gefunden, daß beim Umsetzen dieser reaktionsfähigen a-Chlormethyl-thioäther mit den Alkalisalzen der Xanthogensäuren stabile neuartige Xanthogensäureester entstehen, die sich durch eine bewerkenswerte insektizide Wirksamkeit bei gleichzeitiger geringer toxischer Wirkung bei Warmblütlern auszeichnen.It has now been found that when reacting this reactive a-chloromethyl thioether with the Alkali salts of xanthogenic acids, stable new types of xanthogenic acid esters are formed, which are separated by a remarkable insecticidal effectiveness with simultaneous low toxic effect in warm-blooded animals distinguish.
Zweckmäßig nimmt man die Umsetzung in einem geeigneten Lösungsmittel vor. Bewährt haben sich vor allem Ketone, die die Alkalisalze der Xanthogensäuren gut lösen. Die Reaktion vollzieht sich bei Temperaturen zwischen'20 und 60° besonders glatt.The reaction is expediently carried out in a suitable solvent. Have proven themselves especially ketones, which dissolve the alkali salts of xanthogenic acids well. The reaction takes place at Temperatures between 20 and 60 ° particularly smooth.
Gegenüber den aus Monatshefte für Chemie, Bd. 82 (1951), S. 238 bis 244, bekannten Verbindungen besitzen die nach dem erfindungsgemäßen Verfahren erhaltenen Verbindungen eine sehr viel höhere insektizide Wirksamkeit.Compared to the compounds known from MONTHS FOR CHEMISTRY, Vol. 82 (1951), pp. 238 to 244 the compounds obtained by the process according to the invention have a very much higher insecticidal effect Effectiveness.
Die neuen Produkte sind stark gelbgefärbte Öle, die sich im Vakuum unzersetzt destillieren lassen. Die folgenden Beispiele geben einen Überblick über das neue Verfahren.The new products are strongly yellow-colored oils that can be distilled without decomposition in a vacuum. The following examples provide an overview of the new process.
Beispiel 1 SExample 1 p
C2H5S-CH2-S-C-OC2H5 35 g a-Chlormethyl-äthyl-thioäther tropft man bei 35 bis 400 unter Rühren zu einer Anschlämmung vonC 2 H 5 S-CH 2 -S-C-OC 2 H 5 35 g of a-chloromethyl-ethyl-thioether are added dropwise at 35 to 40 0 with stirring to a slurry of
) 660/455) 660/455
Claims (1)
Family
ID=
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