JPH05247037A - 2-acylamino-2-thiazoline compound, its production and controller against harmful organism - Google Patents

Abstract

PURPOSE:To obtain a new 2-acylamino-2-thiazoline compound useful as a controller for harmful organisms, having excellent insecticidal, acaricidal and microbial effects. CONSTITUTION:A compound of formula I (X is H, halogen, lower alkyl or phenyl) such as 2-(5-bromo-2-thenoylamino)-4,4-bis(trifluoromethyl)-5-(tetrafluoroethy lidene)-2-thiazoline. The compound is obtained by reacting a 2-iminothiazolidine compound of formula II with a compound of formula III (Y is halogen) in the presence of a base in a solvent. Agricultural and horticultural insect pests, sanitary insect pests, stored grain insect pests, root-knot nematode in soil, Bursaphelenchus Lignicolus, bulb mite and agricultural and horticultural pathogenic germs may be cited as the harmful organisms over which the compound has controlling effects.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is a novel pesticide such as insecticide, acaricide, fungicide and the like.
The present invention relates to an acylamino-2-thiazoline compound and a method for producing the same.

[0002]

Description of the Prior Art The 2-acylamino-2-thiazoline compound of the present invention is a novel compound, and its pest control activity is not known.

[0003]

The object of the present invention is to provide a novel 2-
An object is to provide an acylamino-2-thiazoline compound, a method for producing the same, and a pest control agent containing the same as an active ingredient.

[0004]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that a novel 2-acylamino-2-thiazoline compound has a remarkable controlling activity against pests. The present invention has been completed and the present invention has been completed. That is, the first invention is a compound (I) represented by the following formula:

[0005]

[Chemical 4]

(In the formula, X represents a hydrogen atom, a halogen atom, a lower alkyl group or a phenyl group. The present invention relates to a 2-acylamino-2-thiazoline compound. (II):

[0007]

[Chemical 5]

A 2-iminothiazolidine compound represented by and a compound (III) of the following formula:

[0009]

[Chemical 6]

(Wherein X has the same meaning as described above; Y
Represents a halogen atom. ) It reacts with the compound shown by these, and it relates to the manufacturing method of said compound (I) characterized by the above-mentioned. The third invention relates to a pest control agent containing the compound (I) as an active ingredient.

The present invention will be described in detail below. In the novel 2-acylamino-2-thiazoline compound [compound (I)] which is the target compound and the compound (III) which is a starting material for the production, the substitution positions of X, Y and X are as follows.

Examples of X include a hydrogen atom, a halogen atom, a lower alkyl group and a phenyl group. Of the halogen atoms (eg, fluorine atom, chlorine atom, bromine atom, iodine atom, etc.), chlorine atom and bromine atom are preferable. A lower alkyl group (eg, having 1 carbon atom)
-6 straight-chain or branched-chain), preferably a straight-chain or branched-chain having 1 to 4 carbon atoms; and more preferably a methyl group.

The phenyl group may be a substituted or unsubstituted group, preferably a substituted phenyl group; the substituent is preferably a halogen atom (eg, fluorine atom, chlorine atom, bromine atom, Iodine atom, etc.), and more preferably chlorine atom; the position of the substituent is preferably 4-position; and the phenyl group substituted with a halogen atom is preferably 4-chlorophenyl group.

Examples of Y include a halogen atom (for example, those described for X above); preferably a chlorine atom.

The substitution position of X is not particularly limited, but 2
In the case of a thiophenecarboxylic acid derivative, the 3, 4, or 5 position is preferred; in the case of the 3-thiophenecarboxylic acid derivative, the 5 position is preferred. As shown below, the compound (I) can be usually synthesized by reacting the starting compounds (II) and (III) in a solvent in the presence of a base.

[0016]

[Chemical 7]

(In the formula, X and Y have the same meanings as described above.) The solvent is not particularly limited as long as it does not directly participate in this reaction, and examples thereof include benzene, toluene, xylene, methylnaphthalene, Chlorinated or non-chlorinated aromatic, aliphatic or alicyclic hydrocarbons such as petroleum ether, ligroin, hexane, chlorobenzene, dichlorobenzene, methylene chloride, chloroform, dichloromethane, dichloroethane, trichloroethylene, cyclohexane Ethers such as diethyl ether, tetrahydrofuran, dioxane, etc .; ketones such as acetone, methyl ethyl ketone, etc .; methanol,
Alcohols such as ethanol and ethylene glycol, or hydrates thereof; N, N-dimethylformamide,
Amides such as N, N-dimethylacetamide;
Examples thereof include organic bases such as triethylamine, pyridine, N, N-dimethylaniline and the like; 1,3-dimethyl-2-imidazolidinone; dimethylsulfoxide; mixtures of the above solvents and the like.

The amount of the solvent used is the compound (I
The compound (II) can be used so that the concentration of I) falls within the range of 5 to 80% by weight, preferably the compound (II).
It is preferable to use it so that the concentration thereof is 10 to 70% by weight.

Examples of the base include organic bases such as triethylamine, pyridine, N, N-dimethylaniline; alkali metal alkoxides such as sodium methoxide, sodium ethoxide; sodium amide, sodium hydroxide, water. Inorganic bases such as potassium oxide, potassium carbonate, sodium carbonate, sodium hydride and the like can be mentioned.

The amount of the base used is the compound (I
It can be used in an amount of 0.001 to 5 times the molar amount of I).

The reaction temperature is not particularly limited, but is usually within the temperature range from room temperature to the boiling point of the solvent used or less.
The reaction time varies depending on the above-mentioned concentration and temperature, but can usually be 0.3 to 24 hours.

The amount of compound (III) used is
The compound (III) is used in a molar amount of 0.5 to 2 times, preferably 0.8 to 1.5 times the molar amount of I).

As the compound (II) used in the present invention, for example, perfluoro- (2-methyl-2pentene) and thiourea are used according to the method described in JP-A-58-57371. Can be manufactured.

The compound (III) used in the present invention can be prepared according to, for example, J. Am. Chem. S
oc. , 68, page 2599 (1946) and the like according to the method described in the following formula (IV);

[0025]

[Chemical 8]

(In the formula, X has the same meaning as described above.)
The compound can be produced by using the thiophenecarboxylic acid represented by

[0027]

[Chemical 9]

(In the formula, X and Y have the same meanings as described above.) The compound (III) is, for example, each of the substituent groups corresponding to the compounds 1 to 8 shown in Table 1. Compound (III) [Compound (III) ₁ to (III) ₈
Called. For example, the compound (III) ₁ means that X in the formula represented by the compound (III) is a hydrogen atom and Y is a chlorine atom. ] Can be mentioned.

Further, in addition to the method described above, the compound (I) can be synthesized by replacing the compound (III) with thiophene, since the compound (III) is one of the reactive derivatives of thiophenecarboxylic acids. Other reactive derivatives of carboxylic acids (for example, acid anhydrides and esters corresponding to thiophenecarboxylic acids) can be used for synthesis in the same manner as above.

Further, the compound (I) can also be synthesized by reacting the compound (II) with the compound (IV) in a solvent in the presence of a reaction aid such as dicyclohexylcarbodiimide.

The desired compound (I) produced as described above is subjected to usual post-treatments such as extraction, concentration and filtration after the completion of the reaction and, if necessary, known methods such as recrystallization and various chromatographies. It can be appropriately purified by the above method.

Examples of the compound (I) include compounds (I) [compounds (I) ₁ to (I) ₈ each consisting of the kinds of substituents corresponding to the compounds 1 to 8 shown in Table 1]. ..
For example, the compound (I) ₁ means that X in the formula represented by the compound (I) is a hydrogen atom. ] Can be mentioned.

The pests which can be controlled by the compound (I) include agricultural and horticultural pests [eg, Hemiptera (Plants, leafhoppers, aphids, whiteflies, etc.),
Lepidoptera (Beetle beetles, diamondback moths, leaf beetles, diamondback moths, etc.), Coleoptera (Galloridae, Weevils, Chrysomelidae, Chafers, etc.) ), Hygiene pests (for example, flies, mosquitoes, cockroaches, etc.), stored-grain pests (Euphorbiaceae, bean weevils, etc.), root-knot nematodes in the soil, pine wood nematodes, and mite mite. Agricultural and horticultural pathogens (eg, wheat leaf rust, barley powdery mildew, cucumber rot, rice blast, tomato epidemic, etc.) can be mentioned.

The pest control agent of the present invention is used for remarkable insecticidal
It has acaricidal and bactericidal effects and contains one or more compounds (I) as active ingredients. Compound (I)
Can be used alone, but is usually mixed with a carrier, a surfactant, a dispersant, an auxiliary agent, etc. by a conventional method (for example, powders, emulsions, fine granules, granules, wettable powders, oily preparations). (Prepared as a composition such as a suspension or an aerosol) is preferably used.

As the carrier, for example, solid carriers such as talc, bentonite, clay, kaolin, diatomaceous earth, white carbon, vermiculite, slaked lime, silica sand, ammonium sulfate, urea; hydrocarbons (kerosene, mineral oil, etc.), aromatic carbonization Hydrogen (benzene, toluene, xylene, etc.), chlorinated hydrocarbons (chloroform, carbon tetrachloride, etc.), ethers (dioxane, tetrahydrofuran, etc.), ketones (acetone, cyclohexanone, isophorone, etc.), esters (ethyl acetate, ethylene) Liquid carriers such as glycol acetate, dibutyl maleate, etc.), alcohols (methanol, n-hexanol, ethylene glycol, etc.), polar solvents (dimethylformamide, dimethylsulfoxide, etc.), water; air, nitrogen, carbon dioxide, freon, etc. Body carrier (in this case, can be mixed injection) out and the like.

Examples of surfactants and dispersants that can be used to improve the performance of the present agent such as adhesion to animals and plants, absorption, dispersion of drug, emulsification, spread, and the like include, for example, alcohol sulfates and alkyls. Examples thereof include sulfonate, lignin sulfonate, polyoxyethylene glycol ether and the like. In order to improve the properties of the preparation, for example, carboxymethyl cellulose, polyethylene glycol, gum arabic or the like can be used as an auxiliary agent.

In the production of the present agent, the above-mentioned carrier, surfactant, dispersant and auxiliary agent can be used alone or in appropriate combination according to the purpose.
The concentration of the active ingredient in the case where the compound (I) of the present invention is formulated is usually 1 to 50% by weight in an emulsion and 0.3 in a powder.
25% by weight, usually 1 to 90% by weight for wettable powders, usually 0.5 to 5% by weight for granules, usually 0.5 to 5% by weight for oils, usually 0.1 to 5% by weight for aerosols. is there.

These formulations can be diluted to an appropriate concentration and sprayed on plant foliage, soil, water surface of paddy fields or directly applied to various applications depending on the purpose.

[0039]

EXAMPLES Examples of the present invention will be specifically described below.
It should be noted that these examples do not limit the scope of the present invention. Example 1 [Synthesis of Compound (I)]

(1) 2- (5-Bromo-2-thenoylamino) -4,4-bis (trifluoromethyl) -5-
Synthesis of (tetrafluoroethylidene) -2-thiazoline (Compound 3) 2-Imino-4,4-bis (trifluoromethyl) -5
-(Tetrafluoroethylidene) -1,3-thiazolidine (3 g) and triethylamine (0.6 ml) were dissolved in toluene (30 ml), and the starting compound (III) ₃
5-bromo-2-thiophenecarbonyl chloride (1.4 g) was gradually added, and the mixture was stirred at room temperature for 3 hours.

After the reaction, the target compound (I) was extracted from this reaction mixture with ethyl acetate, washed with water, dried over anhydrous sodium sulfate, and then the solvent was distilled off under reduced pressure. The obtained oily substance was subjected to column chromatography (Wako Gel C-2
00, toluene: ethyl acetate = 20: 1 elution) to obtain 0.9 g of the target compound as colorless crystals.

(2) 2- (3-Methyl-2-thenoylamino) -4,4-bis (trifluoromethyl) -5-
Synthesis of (tetrafluoroethylidene) -2-thiazoline (Compound 4) 2-Imino-4,4-bis (trifluoromethyl) -5
-(Tetrafluoroethylidene) -1,3-thiazolidine (1 g) and triethylamine (0.2 ml) were dissolved in toluene (10 ml) to prepare the starting compound (III) ₃
3-Methyl-2-thiophenecarbonyl chloride (0.5 g) was gradually added, and the mixture was stirred at room temperature for 3 hours.

After the reaction, the target compound (I) was extracted from this reaction mixture with ethyl acetate, washed with water, dried over anhydrous sodium sulfate, and then the solvent was distilled off under reduced pressure. The obtained oily substance was subjected to column chromatography (Wako Gel C-2
00, toluene: ethyl acetate = 20: 1 elution) to obtain 0.2 g of the target compound as colorless crystals.

Example 2 [Preparation of formulation] (1) Preparation of granules 5 parts by weight of compound 1, 35 parts by weight of bentonite, 57 parts by weight of talc, 1 part by weight of neoperex powder (trade name; manufactured by Kao Corporation) And 2 parts by weight of sodium lignin sulfonate were uniformly mixed, and then a small amount of water was added and kneaded, then granulated and dried to obtain a granule.

(2) Preparation of wettable powder 10 parts by weight of compound 1, 70 parts by weight of kaolin, 18 parts by weight of white carbon, 1.5 parts by weight of neoperex powder (trade name; manufactured by Kao Corporation) and demol (product) Name; manufactured by Kao Co., Ltd.)
Then, it was pulverized to obtain a wettable powder.

(3) Preparation of emulsion To 20 parts by weight of compound 1 and 70 parts by weight of xylene, 10 parts by weight of toxanone (trade name; manufactured by Sanyo Kasei Kogyo Co., Ltd.) were added and mixed uniformly to obtain an emulsion. ..

(4) Preparation of Dust Preparation 5 parts by weight of compound 1, 50 parts by weight of talc and 4 of kaolin
A powder was obtained by uniformly mixing 5 parts by weight.

Example 3 [Efficacy test] (1) Efficacy test against Spodoptera litura Each wettable powder of compound (I) shown in Table 1 prepared according to Example 2 contains a surfactant (0.01%). 50 each with water
Dilute to 0 ppm and add 3% of soybean true leaves in each of these solutions.
It was dipped for 0 seconds, placed in each plastic cup one by one and air dried. In each of these cups, 10 Spodoptera litura (2nd instar larvae) were released, covered with the lids, allowed to stand in a constant temperature room at 25 ° C., and after 2 days, the number of live and dead insects in each cup was counted to determine the insecticidal rate. The evaluation of insecticidal effect depends on the range of insecticidal rate.
Stage (A: 100%, B: 99-80%, C: 79-6)
0%, D: 59% or less). Incidentally, JP-A-58-
The following formula (V) described in Japanese Patent No. 57371:

[0049]

[Chemical 10]

The same efficacy test was examined using a comparative preparation in which the compound represented by the above was prepared in the same manner as described above. The results are shown in Table 2.

[0051]

[Table 2]

(2) Efficacy test against diamondback moth 30% of each wettable powder of compound (I) shown in Table 1 prepared according to Example 2 was dissolved in water containing a surfactant (0.01%).
Diluted to 0 ppm, cabbage leaf pieces (5 cm × 5 cm) were dipped in each of these chemical solutions for 30 seconds, placed in each plastic cup one by one and air dried. In each of these cups, 10 diamondback moths (third instar larvae) were released and capped,
The cup was allowed to stand in a constant temperature room at 0 ° C., and two days later, the number of live and dead insects in each cup was counted to determine the insecticidal rate. The results of evaluation of the insecticidal effect are shown in Table 3 together with the results obtained by using the comparative preparation described in (1) above, in the 4-step evaluation method described in (1) above.

[0053]

[Table 3]

(3) Efficacy test against Pleurotus cornucopsis Each of the wettable powders of the compound (I) shown in Table 1 prepared according to Example 2 was diluted with water containing a surfactant (0.01%) to 50 times.
It was diluted to 0 ppm, and 1 ml of each of these chemical solutions was evenly dropped on the filter paper (diameter 7.8 cm, 1 sheet) in each plastic cup and air-dried. 10 in each of these cups
Release the head flutterer (adult) and cover it,
After leaving it in a constant temperature room at 25 ° C., the number of live and dead insects in each cup was counted 5 days later to determine the insecticidal rate. The results of evaluation of insecticidal effect,
The results obtained using the comparative preparation described in (1) above are shown in Table 4 along with the 4-step evaluation method described in (1) above.

[0055]

[Table 4]

(4) Efficacy test against adult female mites of Plutella xylostrum Each wettable powder of the compound (I) shown in Table 1 prepared according to Example 2 was treated with water containing a surfactant (0.01%) at 300 p.
Each bean leaf piece (20 mm in diameter) diluted with pm and infested with 10 adult female adult mites was immersed in each of these drug solutions for 15 seconds. Next, remove each of these leaf pieces at 25 ° C.
The sample was allowed to stand in a constant temperature chamber of No. 3 and the number of live and dead insects in each leaf piece was counted 3 days later to determine the miticidal rate. The results of the evaluation of the insecticidal effect are shown in Table 5 together with the results obtained by using the comparative preparation described in (1) above, according to the four-stage evaluation method described in (1) above.
Shown in.

[0057]

[Table 5]

(5) Pest control efficacy test against wheat leaf rust (preventive effect) Ten wheat (cultivar: Kobushi-komugi) was grown in a plastic flower pot with a diameter of 6 cm, and each seedling was grown at 1.5 leaf stage. Each wettable powder of the compound (I) shown in Table 1 prepared according to Example 2 was diluted to 500 ppm with water containing a surfactant (0.01%), and these chemical solutions were diluted with 1
20 ml was sprayed per pot. These were cultivated in a glass greenhouse for 2 days, and then a spore suspension of wheat rust disease (7 × 10 ⁴ spores / ml) was uniformly spray-inoculated on the plants. Next, these were grown in a glass greenhouse for one week, and the degree of wheat leaf rust lesions appearing on each first leaf was investigated.

The evaluation of the bactericidal effect is carried out in 6 stages (0: whole diseased, 1: lesion area is about 60%, 2: lesion area is about 40%, as compared with the degree of lesions in the untreated section. 3: The lesion area is about 20%, 4: The lesion area is 10% or less, and 5: No lesion). In addition, the same efficacy test was examined using a comparative preparation in which the compound (V) described in (1) above was a preparation similar to that in (4) above. The results are shown in Table 6.

[0060]

[Table 6]

[0061]

INDUSTRIAL APPLICABILITY The novel 2-acylamino-2- of the present invention
The thiazoline compound is a pesticide useful as a pest control agent.

[Table 1]

Front page continuation (72) Inventor Kiyoshi Shitsumi 5 1978, Ogushi, Ube, Yamaguchi Prefecture, Ube Institute of Industrial Research, Ltd. (72) Inventor, Yoshinori Yamanaka 5 1978, Ube, Yamaguchi Prefecture 5 Ube Industries Ube Co., Ltd. In the laboratory

Claims (3)

[Claims] 1. The following formula: (In the formula, X represents a hydrogen atom, a halogen atom, a lower alkyl group or a phenyl group.) A 2-acylamino-2-thiazoline compound. 2. The following formula: 2-iminothiazolidine compound represented by the following formula and the following formula: (Wherein X has the same meaning as described in claim 1; Y represents a halogen atom), and the compound represented by the formula (I) in claim 1 is reacted. -Method for producing an acylamino-2-thiazoline compound. 3. A compound represented by formula (I) according to claim 1
A pest control agent containing an acylamino-2-thiazoline compound as an active ingredient.