JPS58162594A - Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component - Google Patents

Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component

Info

Publication number
JPS58162594A
JPS58162594A JP4546482A JP4546482A JPS58162594A JP S58162594 A JPS58162594 A JP S58162594A JP 4546482 A JP4546482 A JP 4546482A JP 4546482 A JP4546482 A JP 4546482A JP S58162594 A JPS58162594 A JP S58162594A
Authority
JP
Japan
Prior art keywords
ester
fluoroethyl
soil
methylphosphinic acid
fluoroethanol
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
Application number
JP4546482A
Other languages
Japanese (ja)
Inventor
Mitsuru Sasaki
満 佐々木
Tadashi Oishi
正 大石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP4546482A priority Critical patent/JPS58162594A/en
Publication of JPS58162594A publication Critical patent/JPS58162594A/en
Pending legal-status Critical Current

Links

Abstract

NEW MATERIAL:The methylphosphinic acid 2-fluoroethyl ester of formulaI. USE:An agent for controlling the soil blight caused by the phytopathogenic microorganisms belonging to Fusarium genus or Pythium genus. PROCESS:The objective compound can be prepared by reacting methyldichlorophosphine of formula II with >=2 equivalent of 2-fluoroethanol of formula III, if necessary in the presence of an organic solvent such as benzene, diethyl ether, etc., usually at -70-+30 deg.C for 0.5-5hr.

Description

【発明の詳細な説明】 本発明は、式 %式% で表わされるメチルホスフィン酸 8−フルオロエチル
、その製造法およびそれを有効成分とする土壌病害防除
剤に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to 8-fluoroethyl methylphosphinate represented by the formula %, a method for producing the same, and a soil disease control agent containing the same as an active ingredient.

ある種のアルキルホスフィン酸エステルカ殺1剤として
有用であることは、たとえば特開昭56−161110
6号公報で知られている。また土壊病害防除剤としては
、クロルピクリン、臭化メチル等の土壊1.蒸剤、ベノ
ミル、ヒドロキシイソキサゾール等の殺菌剤が用いられ
ているうしかし土壊1蒸剤は施用後ビニル被覆、その除
去、耕ハによるガス抜き等の作業に多大の力を必要とす
るし、これらのam剤はいずれも土壌病害防除剤として
は必らずしも常に充分であるとはいえない。
The usefulness of certain alkyl phosphinic acid esters as a pesticide has been reported, for example, in JP-A-56-161110.
It is known from Publication No. 6. In addition, soil damage control agents such as chloropicrin and methyl bromide are used. After application, the fungicides such as fungicides, benomyl, and hydroxyisoxazole are used. After application, a great deal of effort is required to cover the soil with vinyl, remove it, and degas it by tilling. However, it cannot be said that these am agents are always sufficient as soil disease control agents.

本発明者らは、これらの点に留意してより好ましい土壌
病害防除剤を見出すべく鋭意検討した結果、メチルホス
フィン酸 !−フルオロエチル(以下、本発明化合物と
称する。)がフザリウム属;ピシウム属の植物病害■に
よる±1111病害に対しすぐれた防除効果を有する仁
とを見出した。フザリウム属の植物病害■による土壌病
害としては、トマト萎ちょう病(Fueariumox
yspoyum f、  sp、  1icop@ra
ioi)、ダイコン養黄病(Fusarium oxy
sporum f、 ap、raphani)、キュウ
リツる割病(Pusarium oxysporum 
f、 sp。
The present inventors kept these points in mind and conducted intensive studies to find a more preferable soil disease control agent.As a result, methylphosphinic acid! - It has been found that fluoroethyl (hereinafter referred to as the compound of the present invention) has an excellent control effect on plant diseases of the genus Fusarium and Pythium (±1111). Soil diseases caused by plant diseases of the genus Fusarium include tomato wilt (Fuariumox
yspoyum f, sp, 1icop@ra
ioi), Fusarium oxy
sporum f, ap, raphani), cucumber splitting disease (Pusarium oxysporum)
f, sp.

cucumerinum) 、キャベツ萎黄病(Fus
ariumoxysporum f、 ap、cong
lutinana )、スイカつる割病(iFusar
ium oxysporum f、 sp、 nive
um )、イチゴ萎黄病(IFusarium oxy
aporum f、 sp。
cucumerinum), cabbage yellowing disease (Fus
ariumoxysporum f, ap, cong
lutinana), watermelon vine split disease (iFusar)
ium oxysporum f, sp, nive
um ), strawberry chlorosis (IFusarium oxy
aporum f, sp.

fragariae )およびエントウ根腐病(Fus
ariumsolani f、8p、pisi)などが
あり、ピシウム属の植物病害菌による土壊病害としては
キュウリ苗立枯病(Pythium aphanide
rmatum ) 、タバコ苗立枯病(Pythium
 dabaryKnum 、)およびダイズのPyth
ium Rot (Pythium aphanler
matumlPythium d@baryanum 
、 Pythium 1rre1iulars、Pyt
hium myriotylum %Pythium 
ultimum )などがある。
fragariae) and Enthus root rot (Fus
Pythium solani f, Pythium solani f, Pythium solani f, Pythium solani f, Pythium solani f, Pythium solani f, Pythium 8p, Pisi), etc.;
rmatum), tobacco seedling damping-off (Pythium
dabaryKnum,) and Pyth in soybean
Rot (Pythium aphanler)
matumlPythium d@baryanum
, Pythium 1rre1ulars, Pyt
hium myriotylum %Pythium
ultimate), etc.

本発明化合物は次の方法によって製造することカシ・で
きる。
The compound of the present invention can be produced by the following method.

(製造法ム) メチルジクロルホスフィンと2−フルオ
ロエタノールとを 反応させる。
(Production method) Methyldichlorophosphine and 2-fluoroethanol are reacted.

メチルジクロルホスフィンと2当量以上の2−フルオロ
エタノールとを有機溶媒の存在下または非存在下、冷却
しまたは冷却することなく室温で反応させる。有機溶媒
としては、ベンゼン、トルエン、キシレン、石油エーテ
ルなどの芳香族または脂肪族炭化水素、クロルベンゼン
、塩化メチレン、塩化エチレン、クロロホルム、テトラ
クロルエチレンなどのハロゲン化炭化水素、ジエチルエ
ーテル、ジイソプロピルエーテルなどのエーテル類があ
げられる。反応温度、反応時間は有機溶媒の有無、種類
によって異なるが、一般に一70℃ないし+80℃、8
0分ないし5時間である。反応生成物を蒸溜等によって
精製すれば本発明化合物が得られる。
Methyldichlorophosphine and 2 or more equivalents of 2-fluoroethanol are reacted at room temperature with or without cooling in the presence or absence of an organic solvent. Examples of organic solvents include aromatic or aliphatic hydrocarbons such as benzene, toluene, xylene, and petroleum ether, halogenated hydrocarbons such as chlorobenzene, methylene chloride, ethylene chloride, chloroform, and tetrachlorethylene, diethyl ether, diisopropyl ether, etc. These include ethers. The reaction temperature and reaction time vary depending on the presence or absence of organic solvent and the type, but generally -70°C to +80°C, 8°C.
The duration ranges from 0 minutes to 5 hours. The compound of the present invention can be obtained by purifying the reaction product by distillation or the like.

この製造法を反応式で示すと次のとおりである。The reaction formula for this production method is as follows.

■ (製造法B) メチルジクロルホスフィンと2−フルオ
ロエタノールとを有機 塩基の存在下反応させてメチル 亜ホスホン酸 ジー2−フルオ ロエチルを得、これを加水分解 する。
(Production method B) Methyldichlorophosphine and 2-fluoroethanol are reacted in the presence of an organic base to obtain di-2-fluoroethyl methylphosphonate, which is then hydrolyzed.

メチルジクロルホスフィンと2当量以上の2−フルオロ
エタノールとを有機溶媒中、有機塩基の存在下冷却して
反応させてメチル亜ホスホン酸ジー2−フルオロエチル
を得る。
Methyldichlorophosphine and two or more equivalents of 2-fluoroethanol are cooled and reacted in an organic solvent in the presence of an organic base to obtain di-2-fluoroethyl methylphosphonate.

有機溶媒としては、製造法ムのそれと同じも、のがあげ
られる。有機塩基としては、トリエチルアミン、ピリジ
ン、N、N−ジエチルアニリンなどの有機第8級アミン
があげられる。
Examples of the organic solvent include those used in the production method. Examples of the organic base include organic 8th class amines such as triethylamine, pyridine, and N,N-diethylaniline.

その使用量は、メチルジクロルホスフィンに対して2当
量以上である。反応温度、反応時間は有機溶媒、有機塩
基の種類によって異なるが一般に一70℃ないし0℃、
80分ないし12時間である。得られたメチル亜ホスホ
ン酸  ジー2−フルオロエチルは単st、でもよいが
、単離することなくメチル亜ホスホン酸 ジー2−フル
オロエチルに対して当量の水で加水分解する。反応時間
、反応温度は一般にOLないし+80℃、1時間ないし
12時間である。
The amount used is 2 equivalents or more relative to methyldichlorophosphine. The reaction temperature and reaction time vary depending on the type of organic solvent and organic base, but generally -70°C to 0°C,
The duration is 80 minutes to 12 hours. The obtained di-2-fluoroethyl methylphosphonate may be a monost, but it is hydrolyzed with an equivalent amount of water to the di-2-fluoroethyl methylphosphonate without isolation. The reaction time and reaction temperature are generally OL to +80°C for 1 to 12 hours.

反応生成物を蒸溜等によって精製すれば本発明化合物と
原料化合物である2−フルオロエタノールがそれぞれ得
られる。この2−フルオロエタノールは再度原料として
用いることができる。
If the reaction product is purified by distillation or the like, the compound of the present invention and 2-fluoroethanol, which is a raw material compound, can be obtained. This 2-fluoroethanol can be used again as a raw material.

この製造法を反応式で示すと次のとおりでFCH2CH
20−P−CHs 菖 1ヨ【 2−フルオロエタノール6.0f(94ミリモル)e乾
1にエーテル5−に溶かし、攪拌しながら−7060で
、メチルジクロルホスフィン5.07(48Zリモル)
を80分で加えた。
The reaction formula for this production method is as follows: FCH2CH
20-P-CHs Calories 1yo [2-Fluoroethanol 6.0f (94 mmol) e Dissolved in ether 5-1 with stirring and at -7060, methyldichlorophosphine 5.07 (48 mmol)
was added in 80 minutes.

ゆっくり室温に戻し20℃〜25℃で8時間保ったのち
蒸留するとメチルホスフィン酸2フルオロエチル4.1
tが得られた。沸点112〜114℃/17■Hf 、
収車(76,74)製造例2  (製造法人による本発
明化合物の製造)2−フルオロエタノール8.0r(1
25ミリモル)に攪拌しながら25’C−80℃でメチ
ルジクロルホスフィン7、 Of (60jリモル)を
2時間かけて加えた。20’(=26℃でl特開攪拌し
たのち蒸留するとメチルホスフィン酸 2−フルオロエ
チル8.8tが得られた。
After slowly returning to room temperature and keeping it at 20℃ to 25℃ for 8 hours, distillation yields 4.1 difluoroethyl methylphosphinate.
t was obtained. Boiling point 112-114℃/17■Hf,
Collection vehicle (76, 74) Production example 2 (Production of the compound of the present invention by a manufacturing corporation) 2-Fluoroethanol 8.0r (1
Methyldichlorophosphine 7, Of (60j mmol) was added over 2 hours at 25'C-80°C to the mixture (25 mmol) with stirring. The mixture was stirred at 26° C. and then distilled to obtain 8.8 tons of 2-fluoroethyl methylphosphinate.

収率50,2鳴。Yield: 50.2 min.

製造例8  (製造法Bによる本発明化合物の製造)メ
チルジクロルホスフィン68. Of (0,68モル
)を乾燥エーテル800−に溶かし、攪拌しながら71
0℃でピリジン95.0f(1,20モル)と2−フル
オロエタノール84.5F(1,82モル)の混液を8
時間かけて加えた。0℃に1時間保ったのち、−過して
、ピリジン塩酸塩を除去した。を液を濃縮すると88.
4Fのメチル亜ホスホン蒙り−2−フルオロエチル(収
率8B、61)が油状物として得られた。これに水8.
7F(0,4815モル)を加え、20〜26℃に1!
1時間保ったのち蒸留すると、初留分として2−フルオ
ロエタノール!1.0f(沸点100〜105’C/ 
76 Omay )とメチルホスフィン酸 2−フルオ
ロエチル47.1 Fが得られた。収車64.64 本発明化合物を土壌病害防除剤として用いる一合は、通
常固体担体、液体担体と混合し、必要あれば各種の製剤
用補助剤、たとえば界面活性剤、湿展剤、固着剤、増粘
・剤、安定剤を添加して、乳剤、水和剤、粒剤、粉剤等
に製剤するこれらの製剤には有効成分として本発明化合
物を重量比で0.1〜9994、好ましくは0.2〜8
G4含有するように通常の製剤方法に従って調整する。
Production Example 8 (Production of the compound of the present invention by Production Method B) Methyldichlorophosphine 68. Of (0,68 mol) was dissolved in dry ether 800- and with stirring 71
At 0°C, a mixture of pyridine 95.0f (1,20 mol) and 2-fluoroethanol 84.5F (1,82 mol) was mixed with 8
I added it over time. After keeping at 0°C for 1 hour, the mixture was filtered to remove pyridine hydrochloride. When the liquid is concentrated, 88.
4F methylphosphonite-2-fluoroethyl (yield 8B, 61) was obtained as an oil. This and water 8.
Add 7F (0,4815 mol) and heat at 20-26°C.
After holding for 1 hour, distillation produces 2-fluoroethanol as the first distillate! 1.0f (boiling point 100-105'C/
76 Omay) and 2-fluoroethyl methylphosphinic acid 47.1F were obtained. 64.64 When using the compound of the present invention as a soil disease control agent, it is usually mixed with a solid carrier or liquid carrier, and if necessary, various formulation auxiliaries such as surfactants, wetting agents, and fixing agents are added. , thickeners, stabilizers, etc. to formulate emulsions, wettable powders, granules, powders, etc. These preparations contain the compound of the present invention as an active ingredient in a weight ratio of 0.1 to 9994, preferably 0.1 to 9994. 0.2~8
Adjust to contain G4 according to the usual formulation method.

固体担体としては、植物性担体(たとえばタバコ、トウ
モロコシ、コムギ粉、タイス粉、クチレン、石油樹脂)
、鉱物質担体(たとえばアタパルガスクレー、カオリン
クレー、ベントナイト、酸性白土、セリサイト、バーミ
キュライトなどの粘土類および葉ロウ石、滑石、寒水石
、珪藻土、沸石、軽石、硅砂、活性炭、ホワイトカーボ
ン、石膏)、肥料担体(たとえば硫安、燐安、硝安、塩
安、尿素またはこれらの化成肥料)などがある。
Solid carriers include vegetable carriers (e.g. tobacco, corn, wheat flour, rice flour, cutylene, petroleum resins);
, mineral carriers (for example, clays such as attapulgus clay, kaolin clay, bentonite, acid clay, sericite, vermiculite, and phyllite, talc, anhydrite, diatomaceous earth, zeolite, pumice, silica sand, activated carbon, white carbon, gypsum), fertilizer carriers (for example, ammonium sulfate, ammonium phosphorus, ammonium nitrate, ammonium chloride, urea, or their chemical fertilizers).

液体担体としては、陶肪族および脂環族炭化水素担体(
たとえば灯油、マシン油、ミネラルスピリット、溶剤ナ
フサ)、芳香族炭化水素担体(たとえばキシレン、メチ
ルナフタレン、ノニルフェノール)、アルコールl11
m体(たトエばメチルアルコール、エチルアルコール、
エチレングリコール、ポリエチレングリコール、ポリプ
ロピレングリコール)、エーテル類担体(たとえばジオ
キサン、セロソルブ)、ケトン類担体(たとえばメチル
エチルケトン、メチルイソブチルケトン、シクロヘキサ
ノン、イソホロン)ハロゲン化炭化水素担体(たとえば
ジクロロエタン、トリクロロエタン、四塩化炭素)、エ
ステル、ニトリル、アミド類−およびその他の担体(た
とえばジオクチルフタレート、トリフレシールホスフェ
ート、アセトニトリル、ジメチルホルムアミド、油脂類
)および水などの担体があげられる。
Liquid carriers include ceramic aliphatic and alicyclic hydrocarbon carriers (
(e.g. kerosene, machine oil, mineral spirits, solvent naphtha), aromatic hydrocarbon carriers (e.g. xylene, methylnaphthalene, nonylphenol), alcohol l11
M-isomer (methyl alcohol, ethyl alcohol,
ethylene glycol, polyethylene glycol, polypropylene glycol), ether carriers (e.g. dioxane, cellosolve), ketone carriers (e.g. methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone), halogenated hydrocarbon carriers (e.g. dichloroethane, trichloroethane, carbon tetrachloride) , esters, nitriles, amides, and other carriers (eg, dioctyl phthalate, trifresyl phosphate, acetonitrile, dimethylformamide, fats and oils), and water.

次に各種の製剤用補助剤、たとえば界面活性剤、湿展剤
、固着剤、増粘剤、安定剤としては、アルキルスルホン
酸塩、スルホコへり酸塩、アルキルアリールおよびアル
キルナフタレンスルホン酸塩などのスルホン酸塩、エス
テル硫酸塩、アルキル硫酸塩、エーテル硫酸塩、アル4
 JL/ 7リルエーテル硫酸塩などの硫酸エステル塩
、アルキルアリルエーテルリン酸塩などのリン酸エステ
ル塩、ホルマリン縮合スルホン酸塩、その他カルボン酸
塩などのアニオン界面活性剤、アルキルおよびアルキル
アリルポリオキシエチレンエーテルやポリオキシプロピ
レンを親油基とするブロックポリマーなどのエーテル、
ソルビタンエステルのポリオキシエチレンエーテル、ソ
ルビトールポリオキシエチレンエーテルのエステルなど
のエーテルエステル、ポリオキシエチレン脂肪酸エステ
ル、グリ士リンエステル、ソルビタンエステル、シ日糖
エステルナトのエステル等のノニオン界面活性剤、カゼ
イン、ゼラチン、でんぷん、CMC(カルボキシメチル
セルロース)、pvム(ポリビニルアルコール)、アラ
ビヤゴム、アルギン酸、糖蜜、寒天などの水溶性高分子
やカルシウムまたはナトリウムリグノスルホネート、ス
テアリン酸、オレイン酸、パルミチン酸、松根油、トー
ル油、パイン油、大豆油など各種脂肪酸またはそのエス
テル類、流動パラフィン、エポキシ化油、T CP (
) I)クレジルホスフェ−))、PAP(リン酸イソ
プロピル)、ベントナイトなどがある。
Next, various formulation auxiliaries such as surfactants, wetting agents, fixing agents, thickeners, and stabilizers include alkyl sulfonates, sulfocoheriates, alkylaryl and alkylnaphthalene sulfonates. Sulfonates, ester sulfates, alkyl sulfates, ether sulfates, Al4
JL/ Anionic surfactants such as sulfate ester salts such as 7lyl ether sulfate, phosphate ester salts such as alkyl allyl ether phosphate, formalin condensed sulfonates, and other carboxylates, alkyl and alkylaryl polyoxyethylene ethers ethers such as block polymers with polyoxypropylene as a lipophilic group,
Ether esters such as polyoxyethylene ether of sorbitan ester, ester of sorbitol polyoxyethylene ether, nonionic surfactants such as polyoxyethylene fatty acid ester, glycan ester, sorbitan ester, ester of sucrose ester, casein, gelatin , starch, CMC (carboxymethyl cellulose), pvm (polyvinyl alcohol), gum arabic, alginic acid, molasses, agar and other water-soluble polymers, calcium or sodium lignosulfonate, stearic acid, oleic acid, palmitic acid, pine oil, tall oil. , various fatty acids or their esters such as pine oil and soybean oil, liquid paraffin, epoxidized oil, TCP (
) I) cresyl phosphate)), PAP (isopropyl phosphate), bentonite, etc.

このようにして調整した一刻は、そのままであるいは水
で希釈して常法に従って施用する。
Ikkoku prepared in this way can be applied as is or diluted with water according to a conventional method.

もちろん、他の殺1剤、殺ダニ剤、殺線虫剤、殺虫剤、
種子消毒剤、除草剤、肥料または土壌改良剤等と混合し
て、または温合せずに同時に施用するξともできる。
Of course, other pesticides, acaricides, nematicides, insecticides,
It can also be applied in combination with seed disinfectants, herbicides, fertilizers, soil conditioners, etc., or simultaneously without warming.

次に本発明化合物の製剤例を示す。Next, examples of formulations of the compounds of the present invention will be shown.

製剤例1  扮  剤 本発明化合物10部とカオリンクレー90部とをよく粉
砕混合すれば、10噛の粉剤を得る。
Formulation Example 1 Administrative 10 parts of the compound of the present invention and 90 parts of kaolin clay are thoroughly ground and mixed to obtain 10 pieces of powder.

製剤例2  乳  剤 本発明化合物36部、キシレン66部およびポリオキシ
エチレンアルキルアリルエーテル、脂肪酸のIリオキシ
エチレン付加物およびアルキルアリルスルフォネートの
混合物20部を混合すれば、254の乳剤を得る。
Formulation Example 2 Emulsion By mixing 36 parts of the compound of the present invention, 66 parts of xylene, and 20 parts of a mixture of polyoxyethylene alkyl allyl ether, I-lyoxyethylene adduct of fatty acid, and alkylaryl sulfonate, an emulsion of 254 is obtained. .

製剤例3  水和剤 本発明化合物80部、アルキルベンゼンスル本ン酸塩6
部およびホワイトカーボン65部をよ(粉砕混合すれば
、80mの水利剤を得る。
Formulation Example 3 Wettable powder 80 parts of the compound of the present invention, 6 parts of alkylbenzenesulfonate
By crushing and mixing 1 part and 65 parts of white carbon, 80 m of irrigation agent will be obtained.

製剤例4  粒  剤 本発明化合物10mをキシレンに溶鱗し、16〜82メ
ツシユに整粒したベントナイト90部にふきつけ、しみ
込ませて104粒剤を得る。
Formulation Example 4 Granules 10 m of the compound of the present invention is dissolved in xylene, and 90 parts of bentonite, which has been sized to a size of 16 to 82 mesh, is blown and soaked to obtain 104 granules.

製剤例5  粒  剤 本発明化合物10部をベントナイト80部、リグニンス
ルホン駿カルシウム1部、ラウリル硫酸ソーダ0.1部
およびカオリンクレー58.91[Sと混合し、水を加
えて練合した後、φ7■のスクリーンより押し出し整粒
、乾燥し104粒剤を得る。
Formulation Example 5 Granules 10 parts of the compound of the present invention were mixed with 80 parts of bentonite, 1 part of calcium lignin sulfone, 0.1 part of sodium lauryl sulfate, and 58.91 parts of kaolin clay, and after kneading with water, It is extruded through a φ7■ screen, sized, and dried to obtain 104 granules.

本発明化合物を土壌病害妨除剤として施用する場合、施
用量は通常10アール当り0.05−〜20−であり、
施用濃度は水利剤、乳剤等にして水で希釈して施用する
場合は、0.0054〜0.6憾である。また、粉剤、
粒系等の場合は、通常何ら希釈せずそのままで施用する
。これらの施用量、施用一度は、製剤によっても異なる
し、また施用する時期、場所、施用方法、病害の種類、
1度等、他の状況によっても真なり、また作物の種類に
よっても変わりうるし、さらに上記の範囲に拘わること
なく増減し、濃度を変更してもよい。
When the compound of the present invention is applied as a soil disease inhibitor, the application rate is usually 0.05 to 20 per 10 ares,
The application concentration is 0.0054 to 0.6 when diluted with water in the form of an irrigation agent, emulsion, etc. In addition, powder,
If it is a granular type, it is usually applied as is without any dilution. The amount of these applications and the number of times they are applied vary depending on the formulation, as well as the timing, location, method of application, type of disease, and
This may also be true depending on other circumstances such as once, and may vary depending on the type of crop, and the concentration may be increased or decreased and the concentration may be changed without being limited to the above range.

次に本発明化合物の土壌病害の切除効果を具体的に例示
するために試験例を示す。
Next, a test example will be shown to specifically illustrate the effect of the compound of the present invention on removing soil diseases.

試験例1  ダイコン萎黄病防除効果 プラスチック製ゴツトに畑土壌を詰め、ダイコン萎黄病
@ (Pusarium oxysporum f、 
sp。
Test Example 1 Effect of controlling radish chlorosis (Pusarium oxysporum f,
sp.

raphani )を培養した病原土壊を表層5国の深
さまで混合して接種した。その上にダイコン(品種:早
生40日)の種子をlポット当り16粒播種し、覆土し
た。その後、所定量の水和剤に製剤した供試化合物を水
で希釈し、土壌処理した。温室で8週間栽培した後、発
病状態を調べ健苗率を算出した。
raphani) was mixed and inoculated to the depth of the surface layer. On top of it, 16 seeds of radish (variety: 40 days early) were sown per 1 pot and covered with soil. Thereafter, a predetermined amount of the test compound formulated into a hydrating powder was diluted with water, and the soil was treated. After cultivating in a greenhouse for 8 weeks, the disease state was examined and the percentage of healthy seedlings was calculated.

その結果を第1表に示した。The results are shown in Table 1.

81表 注S :ヒドロキシイソキサゾール(市販殺蘭剤)試験
例2  キャベツ萎黄病防除効果 プラスチック製ポットに畑土壌を詰め、キャヘツ萎黄病
@ (Fusarium oxysporum f、s
p。
Table 81 Note S: Hydroxyisoxazole (commercially available orchidicide) Test Example 2 Effect on cabbage chlorosis control A plastic pot was filled with field soil and the cabbage chlorosis (Fusarium oxysporum f, s)
p.

conglutinanll)を培養した病原土壌を表
層す国の深さまで混合して接種した。その上にキャベツ
(品種:四季穫)の種子を1ポット当り10粒播種し、
覆土した。その後所定量の水和剤に製剤した供試化合物
を水で希釈し、土壊潅注した。なお、クロルピクリン剤
については病原土壌を接種後所定量を注入し、ビニール
被ふくして1週間放置した。その後ビニール被ふくを除
去して1週間ガス抜きをし、キャベツ種子を1ポット当
りlO粒播種し、覆土した。温室内で8週間栽培した後
、発病状態を調べ健苗率を算出した。
The pathogenic soil in which P. conglutinanll was cultured was mixed to the depth of the surface layer and inoculated. On top of that, sow 10 seeds of cabbage (variety: Shikiharu) per pot.
Covered with soil. Thereafter, a predetermined amount of the test compound formulated into a hydrating powder was diluted with water, and the solution was irrigated. Regarding the chloropicrin agent, a predetermined amount of the agent was injected after inoculating the pathogenic soil, covered with vinyl, and left for one week. Thereafter, the vinyl cover was removed and gas was vented for one week, and 10 cabbage seeds were sown per pot and covered with soil. After cultivating in a greenhouse for 8 weeks, the disease state was examined and the percentage of healthy seedlings was calculated.

その結果を第2表に示した。The results are shown in Table 2.

第2表 注1 : 前述に同し 注2:l 注4 :クロルピクリン(市販くん蒸射)プラスチック
製ポットに畑土壌を詰め、キュウリつる割病@ (F’
usarium oxysporum f。
Table 2 Note 1: Same as above Note 2: l Note 4: Chloropicrin (commercially available fumigation) Fill a plastic pot with field soil to prevent cucumber vine split disease @ (F'
usarium oxysporum f.

ap、 cuoumerinum)を培養した病原土壌
と所定ット当910播種種し、覆土した。温室で8週間
栽培した後、発病状態を調べ健苗基を算出した。
910 seeds per predetermined lot were sown with pathogenic soil in which P. ap. After 8 weeks of cultivation in a greenhouse, the disease state was examined and the healthy seedling base was calculated.

その結果を第3表に示した。The results are shown in Table 3.

注1 : 前述に同じ 注2 : 注j :   # 試験例4  キュウリ苗立枯病防除効果プラスチックポ
ットに畑土壌を詰め、キュウリ苗立枯病菌(Pythi
um aphani4@rmatum )を培養した病
原土壌を表層2tyaの深さまで混合して接種した。そ
の上にキュウリ(品種:霜不知地道)の種子を1ポツト
蟲り10粒播種し、覆土した。その後、所定量の水和剤
形態の供試薬剤を水で希釈し、土壌処理した。
Note 1: Same as above Note 2: Note j: # Test Example 4 Effectiveness for controlling cucumber seedling damping-off A plastic pot was filled with field soil, and the cucumber seedling damping-off fungus (Pythi
um aphani4@rmatum) was mixed and inoculated to a depth of 2 tya from the surface layer. On top of it, 10 seeds of cucumber (variety: Shimo Shiranjido) were sown per pot and covered with soil. Thereafter, a predetermined amount of the test chemical in the form of a hydrating powder was diluted with water and the soil was treated.

温室で2週間栽培した後、発病状態を調べ健苗基を算出
した。
After cultivating for two weeks in a greenhouse, the disease state was examined and the healthy seedling base was calculated.

その結果を第4表に示した。The results are shown in Table 4.

注1 : 前述に同じ 注3 :   #Note 1: Same as above Note 3: #

Claims (1)

【特許請求の範囲】 (1)式   O I ? CI2 C11120−P−CH3■ で表わされるメチルホスフィン酸 2−フルオロエチル
。 (2)  2−フルオロエタノールとメチルジクロルホ
スフィンとを反応させることを特徴とするメチルホスフ
ィン酸 2−フルオロエチルの製造法。 (8)2−フルオロエタノールとメチルジクロルホスフ
ィンとを有機塩基の存在下反応させて得られるメチル亜
ホスホン酸ジー2−フルオロエチルを加水分解する仁と
を特徴とするメチルホスフィン酸 2−フルオロエチル
の製造法。 (4)  メチルホスフィン酸 2−フルオロエチルを
有効成分として含有することを特徴とする土壊病害防除
[Claims] (1) Formula O I ? 2-Fluoroethyl methylphosphinate represented by CI2 C11120-P-CH3■. (2) A method for producing 2-fluoroethyl methylphosphinate, which comprises reacting 2-fluoroethanol and methyldichlorophosphine. (8) 2-fluoroethyl methylphosphinic acid, which is characterized by hydrolyzing di-2-fluoroethyl methylphosphonite obtained by reacting 2-fluoroethanol and methyldichlorophosphine in the presence of an organic base. manufacturing method. (4) An earth blight disease control agent characterized by containing 2-fluoroethyl methylphosphinic acid as an active ingredient.
JP4546482A 1982-03-19 1982-03-19 Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component Pending JPS58162594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4546482A JPS58162594A (en) 1982-03-19 1982-03-19 Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4546482A JPS58162594A (en) 1982-03-19 1982-03-19 Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component

Publications (1)

Publication Number Publication Date
JPS58162594A true JPS58162594A (en) 1983-09-27

Family

ID=12720087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4546482A Pending JPS58162594A (en) 1982-03-19 1982-03-19 Methylphosphinic acid 2-fluoroethyl ester, its preparation and soil blight controlling agent containing said ester as active component

Country Status (1)

Country Link
JP (1) JPS58162594A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006137710A (en) * 2004-11-12 2006-06-01 National Institute Of Advanced Industrial & Technology Method for producing menthyl phenylphosphinate
JP2008218712A (en) * 2007-03-05 2008-09-18 Toshiba Corp Arrester

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006137710A (en) * 2004-11-12 2006-06-01 National Institute Of Advanced Industrial & Technology Method for producing menthyl phenylphosphinate
JP4649590B2 (en) * 2004-11-12 2011-03-09 独立行政法人産業技術総合研究所 A method for producing menthyl phenylphosphinate.
JP2008218712A (en) * 2007-03-05 2008-09-18 Toshiba Corp Arrester

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