SU622387A3 - Insecticide - Google Patents

Description

The invention relates to the protection of plants, specifically to the use of 2,2-dimethylvinylcyclopropanecarboxylic acid ester derivatives as an insecticide. An insecticide is known, the active ingredient of which is 5-benzylfurfurylchrysanthemate (pyrestrin) II and also known closer in chemical structure to the proposed insecticide on onov 5-benzyl-1,2,4-oxadysis С (n-СН 6Н-С, СННЙНз -3 -yl-methyl-2,2-dimethyl-3- (2,2-dimethylvinyl) -cyclopropanecarboxylic acid 2j However, these compounds are not sufficiently active. The purpose of the invention is to expand the arsenal of agents acting on a living organism. This is achieved by using ester derivatives 2, 2-dimethyl-3-vinylcyclopropanecarbono This is a generic acid of the formula: (iHg-DhL CHj- / and 6.1 g of potassium carbonate (10% excess). Mix with 100 ml of methyl ethyl acetate and reflux for 5 hours. The resulting suspension is then evaporated to dryness, introduced into 100 ml of toluene (1H-to-e (1H3 CH3 ™ D -.

S1- x

 C (: .n-en: - "n: -co-cng-g- /

-;) /

(compound 2, 1.54.25)

 g

(1 CH-CH-CH too - (iHg Ajj

;

Claims (1)

СНзСНз (compound 3, h j, 1.5082). (1H Br i (compound 4, G1 1.5635). The application forms of Hia preparations based on the proposed compounds are ordinary (powders, granules, emulsions). The active substance content in the preparation lies in the range of 0.1-95%. The biological activity of the proposed compounds A. Insecticidal efficacy against fodder dusts. The bushes of tobacco and potatoes are sprayed with a 0.04% aqueous emulsion of an effective substance (prepared from a 10% seed concentrate). After drying the applied layer on potato and tobacco plants Spodopterq 6-ii plant guinea pigs toraeisB stage 62238 74 and washed with 30 ml of water. After drying the crude product over sodium sulfate, filtration and distillation, the ester 5-beneyl-i, 2,4-oxydia-J-3-yl-methyl-2,2-dimesh-1-3 is obtained - (2,2-dichlorovinyl) -cyclopropanecarboxylic acid formN - O "or. Obtained the following compounds: N -0 Cill2 of the third sheet and Hetiottiis virescens in the stage of the third sheet. B. Insecticidal contact action. The day before applying the insecticidal beans of the compound (Vicid with | b) |, planted in pots, were infected with approximately 200 aphids (Aphl bta faoie) per plant. Applied means with a syringe (broth with a concentration of 1000 ppm prepared from 25% wettable powder). The evaluation was performed 24 hours after application. The test results are shown in the table. Thus, the compounds according to the invention have a high insecticidal activity. , -v -N - 0 c.CH-CH-cH-coo-cHg-J L., / y / V /., / CH bn bc Invention An insecticidal agent containing an active principle based on derivatives of 2,2-dimethyl-3-wn esters of cyclopropanecarboxylic acid and an additive selected from the group of: solvent, dispers Ri e (H-fiH-en - Co in X h CH3 iHj R and - chlorine, fluorine, bromine; X and Y - aeote and oxygen, in amounts from 0, 1 to 95%. Sources of information taken into account during the examination: / Gator, emulsifier, different from In order to enhance the insecticidal effect, it contains 2,2-dimethyl-3-arylcyclopr opancarboxylic acid soy: u1nenie general formula lo1sn .- // NN Chemistry and tehnoloMelnikov M., Himi, 1974, pesticides 213. 47-34358, 2, Japan Patent No. A, 01 N 9/24, 1972.