DE1115244B - Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest control - Google Patents
Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest controlInfo
- Publication number
- DE1115244B DE1115244B DEF26910A DEF0026910A DE1115244B DE 1115244 B DE1115244 B DE 1115244B DE F26910 A DEF26910 A DE F26910A DE F0026910 A DEF0026910 A DE F0026910A DE 1115244 B DE1115244 B DE 1115244B
- Authority
- DE
- Germany
- Prior art keywords
- hepten
- halogenated
- bicyclo
- preparation
- pest control
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
- C07C17/30—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by a Diels-Alder synthesis
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
Verfahren zur Herstellung von zur Schädlingsbekämpfung geeigneten halogenierten Bicyclo- [2, 2, 1]-hepten- (2)-yl-(5)-cyclo-propanverbindungen Es wurde gefunden, daß man zu neuen wertvollen Derivaten des Cyclopropans der Formel worin X für H oder Halogen steht und R, und R2 für H, Halogen, Alkyl, Oxyalkyl, Aryl oder Oxyaryl und gegebenenfalls weitersubstituierte Arylreste stehen, gelangt, wenn man Verbindungen der allgemeinen Formel in der Ri und Ra jeweils die obige Bedeutung haben, in an sich bekannter Weise mit Cyclopentadien bzw. halogenierten Cyclopentadienen bei erhöhter Temperatur umsetzt, gegebenenfalls in Gegenwart von inerten Lösungsmitteln, wie Benzol, Toluol, Xylol, chlorierten Kohlenwasserstoffen, wie Methylenchlorid, Tetrachlorkohlenstoff, Trichloräthylen oder Dioxan.Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest control. It has been found that new valuable derivatives of cyclopropane of the formula can be obtained in which X stands for H or halogen and R and R2 stand for H, halogen, alkyl, oxyalkyl, aryl or oxyaryl and optionally further substituted aryl radicals, if compounds of the general formula are obtained in which Ri and Ra each have the above meaning, reacted in a manner known per se with cyclopentadiene or halogenated cyclopentadienes at elevated temperature, optionally in the presence of inert solvents such as benzene, toluene, xylene, chlorinated hydrocarbons such as methylene chloride, carbon tetrachloride, trichlorethylene or dioxane.
Die Verfahrensprodukte eignen sich als Zwischenprodukte für die Herstellung von Pharmazeutika, Kunststoffen, Weichmachern und Stabilisatoren und dienen als Wirkstoffe von Schädlingsbekämpfungsmitteln. Außer ihrer ausgezeichneten insektiziden Wirkung weisen die Verfahrensprodukte die Eigenschaft auf, praktisch geruchlos zu sein und über eine geringe Warmblütertoxizität zu verfügen. The process products are suitable as intermediate products for production of pharmaceuticals, plastics, plasticizers and stabilizers and serve as Active ingredients of pesticides. Except for their excellent insecticides Effect, the process products have the property of being practically odorless and have a low level of toxicity to warm blooded animals.
Man erzielt eine 100°/Oige Abtötung von Vorratsschädlingen, wie Kornkäfern (Calandra granaria), Reiskäfern (Calandra oryzae) und Reismehlkäfern (Tribolium confusum), wenn man Weizen bzw. Reis im Verhältnis 1 : 1000 mit einer Mischung, bestehend aus 1, 0 °/0 5-(2', 2'-Dichlorcyclopropyl)-1, 2, 3, 4, 7, 7-hexachlorbicyclo- (2, 2, 1)-hepten-(2), 30, 0 °/o hochaktiver Bleicherde, 69, 0 °/o Talkum, gleichmäßig einpudert. A 100% kill of stored pests such as grain beetles is achieved (Calandra granaria), rice beetles (Calandra oryzae) and flour beetles (Tribolium confusum), if you mix wheat or rice in a ratio of 1: 1000 with a mixture, consisting of 1, 0 ° / 0 5- (2 ', 2'-dichlorocyclopropyl) -1, 2, 3, 4, 7, 7-hexachlorbicyclo- (2, 2, 1) -hepten- (2), 30.0% high-activity fuller's earth, 69.0% talc, evenly powdered.
Der Schutz des Getreides vor Schädlingsbefall erstreckt sich auch auf solche Schädlinge, die erst ausschlüpfen oder zuwandern. Besonders hervorzuheben ist hierbei die Abtötung des Reismehlkäfers (Tribolium confusum), der mit vergleichbaren anderen Mitteln nur ungenügend bekämpfbar ist. The protection of the grain from pest infestation also extends for those pests that are only just emerging or migrating. Of particular note is here the killing of the flour beetle (Tribolium confusum), which with comparable other means cannot be adequately combated.
Vergleichsversuche Je 100 g Weizen werden mit 100 mg der zu prüfenden pulverförmigen Zubereitungen innig vermischt, die aus einer 10 0/, Wirkstoff, 30°/0 hochaktive Bleicherde und 60 °/o Talkum enthaltenden Stammischung durch Verdünnen mit Talkum hergestellt wurden. Danach werden 100 bzw. 50 Käfer zugesetzt. Zur Feststellung der Wirkung auf die Käfer werden diese zu vier Zeiten abgesiebt, gezählt und wieder auf den behandelten Weizen gesetzt. Comparative experiments 100 g of wheat are mixed with 100 mg of the to be tested powdered preparations intimately mixed, consisting of a 10 0 /, active ingredient, 30 ° / 0 highly active bleaching earth and 60% talc containing master mixture by dilution made with talc. Then 100 or 50 beetles are added. To determine the effect on the beetles, they are screened off at four times, counted and again placed on the treated wheat.
1. Versuch mit je 100 Kornkäfern (Calandra granaria) im Alter von
3 bis 4 Wochen Stammischung des Vergleichspräparates : 20°/o Pyrethrum-Extrakt (25%
Pyrethrum), 25°/o hochaktive Bleicherde, 55% Talkum.
2. Versuch mit je 50 Reismehlkäfern (Tribolium confusum) im Alter
von mindestens 10 Tagen
Für die Herstellung von Schädlingsbekämpfungsmitteln können die Verbindungen für sich oder in Mischung mit anderen bekannten Schädlingsbekämpfungsmitteln in den üblichen Mischungen, z. B. als Sprüh-oder Stäubemittel, angewandt werden. For the production of pesticides the compounds on its own or in a mixture with other known pesticides in the usual mixtures, e.g. B. can be used as a spray or dust.
Beispiel 1 200 g Hexachlorcyclopentadien werden mit 100 g 1, 1-Dichlor-2-vinylcyclopropan 20 Stunden im Ölbad auf 140'C (Badtemperatur) erhitzt. Die Destillation des Reaktionsgemisches liefert 247 g einer geruchlosen, schwach gelbstichigen, viskosen Flüssigkeit vom Kp. 0,5 = 141°C; nD25 = 1, 5608. Example 1 200 g of hexachlorocyclopentadiene are mixed with 100 g of 1,1-dichloro-2-vinylcyclopropane Heated to 140'C (bath temperature) in an oil bath for 20 hours. The distillation of the reaction mixture delivers 247 g of an odorless, slightly yellowish, viscous liquid vom B.p. 0.5 = 141 ° C; nD25 = 1.5608.
Molekulargewicht : 409, 81.Molecular weight: 409.81.
Berechnet für C10H6Cl8 ... Cl 69,22%; gefunden................ Cl 69, 0, 69, 1 °/o. Calculated for C10H6Cl8 ... Cl 69.22%; found ................ Cl 69.0, 69.1%.
Beispiel 2 Analog dem Verfahren von Beispiel l erhält man aus Hexachlorcyclopentadien und 1, 1-Dibrom-2-vinylcyclopropan das 5- (2', 2'-Dibromcyclopropyl)-1, 2, 3, 4,-7, 7-hexachlorbicyclo- (2, 2, 1)-hepten-(2) vom Kp.1,0 = 165°C ; nD20 1, 5909. Example 2 Analogously to the process of Example 1, hexachlorocyclopentadiene is obtained and 1, 1-dibromo-2-vinylcyclopropane 5- (2 ', 2'-dibromocyclopropyl) -1, 2, 3, 4, -7, 7-hexachlorobicyclo- (2, 2, 1) -hepten- (2), bp 1.0 = 165 ° C; nD20 1, 5909.
Molekulargewicht : 498, 77.Molecular weight: 498.77.
Berechnet für CloHsBraCl6.. C 24, 08°/o, H 1, 21°/a ; gefunden................. C 23,9%, H 1,5%, 23, 9%, 1,3%. Calculated for CloHsBraCl6 .. C 24.08 ° / o, H 1, 21 ° / a; found................. C 23.9%, H 1.5%, 23.9%, 1.3%.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF26910A DE1115244B (en) | 1958-10-29 | 1958-10-29 | Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF26910A DE1115244B (en) | 1958-10-29 | 1958-10-29 | Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest control |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1115244B true DE1115244B (en) | 1961-10-19 |
Family
ID=7092212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF26910A Pending DE1115244B (en) | 1958-10-29 | 1958-10-29 | Process for the preparation of halogenated bicyclo- [2, 2, 1] -hepten- (2) -yl- (5) -cyclo-propane compounds suitable for pest control |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1115244B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1003494B (en) * | 1954-04-17 | 1957-02-28 | Hoechst Ag | Pest repellants |
DE968171C (en) * | 1954-06-02 | 1958-01-23 | Ruhrchemie Ag | Preparations for the control of harmful insects |
-
1958
- 1958-10-29 DE DEF26910A patent/DE1115244B/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1003494B (en) * | 1954-04-17 | 1957-02-28 | Hoechst Ag | Pest repellants |
DE968171C (en) * | 1954-06-02 | 1958-01-23 | Ruhrchemie Ag | Preparations for the control of harmful insects |
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