JPS6023358A - 2,4,6-trifluorobenzonitrile - Google Patents

2,4,6-trifluorobenzonitrile

Info

Publication number
JPS6023358A
JPS6023358A JP13174183A JP13174183A JPS6023358A JP S6023358 A JPS6023358 A JP S6023358A JP 13174183 A JP13174183 A JP 13174183A JP 13174183 A JP13174183 A JP 13174183A JP S6023358 A JPS6023358 A JP S6023358A
Authority
JP
Japan
Prior art keywords
trifluorobenzonitrile
reaction
trichlorobenzonitrile
chloride
chloro
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.)
Granted
Application number
JP13174183A
Other languages
Japanese (ja)
Other versions
JPH037662B2 (en
Inventor
Yasuhiro Tsujii
辻井 康弘
Takao Awazu
隆雄 粟津
Shigeo Murai
重夫 村井
Hisayoshi Uenishi
久善 上西
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.)
Ishihara Sangyo Kaisha Ltd
Original Assignee
Ishihara Sangyo Kaisha 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 Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd
Priority to JP13174183A priority Critical patent/JPS6023358A/en
Publication of JPS6023358A publication Critical patent/JPS6023358A/en
Publication of JPH037662B2 publication Critical patent/JPH037662B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

NEW MATERIAL:2,4,6-Trifluorobenzonitrile. USE:An intermediate for agricultural chemicals, drugs, dye, etc. For example, an intermediate raw material for N-( 2,4,6-trifluorobenzoyl )-N'-[3, 5-dichloro-4-( 3- chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]urea useful for controlling various kinds of insect pests. PREPARATION:2,4,6-Trichlorobenzonitrile is fluorinated to give 2,4,6-trifluorobenzonitrile. In the reaction, 2,4,6-trichlorobenzonitrile is reacted with potassium fluoride in an aprotic polar solvent such as dimethyl sulfoxide, etc. at 140-220 deg.C for 0.5-5hr.

Description

【発明の詳細な説明】 本発明は、新規化合物2,4.6−)リフルオロベンゾ
ニトリルに関する。このものは各種農薬、医薬、染料な
どの中間原料として有用である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel compound 2,4.6-)lifluorobenzonitrile. This product is useful as an intermediate raw material for various agricultural chemicals, medicines, dyes, etc.

2.4.6−)’7フルオロベンゾニトリルは、例えは
’1.3゜5−トリクロロベンゼンを臭素化して2,4
.6−)ジクロロブロモベンゼンとし、次いでこのもの
をシアノ化して2゜4、 、6− )ジクロロベンゾニ
トリルとし、更に弗素化することによって容易に製造す
ることができる。
2.4.6-) '7 Fluorobenzonitrile is produced by brominating '1.3゜5-trichlorobenzene to produce 2,4
.. It can be easily produced by preparing 6-) dichlorobromobenzene, then cyanating this to give 2.4, , 6-) dichlorobenzonitrile, and further fluorination.

2.4.6−Fリクロロベンゾニトリルの弗素化は、2
,4゜6−トリクロロベンゾニトリルと弗化カリウムと
を、ジメチルスルホキシド、ジメチルスルホン、スルホ
ラン、1.3−1− ジメチル−2−イミグゾリノノン、N−メチル−2−ピ
ロリドンなどの非プロトン性極性溶媒中で140〜22
0℃の温度で0.5=5時間反応させて訂なうことがで
きる。なお、弗化カリウム及び非プロトン性極性溶媒は
乾燥、脱水したものを使用するのが望ましい。
2.4.Fluorination of 6-F-lichlorobenzonitrile
,4゜6-Trichlorobenzonitrile and potassium fluoride in an aprotic polar solvent such as dimethylsulfoxide, dimethylsulfone, sulfolane, 1.3-1-dimethyl-2-imigzolinonone, N-methyl-2-pyrrolidone, etc. 140-22
The reaction can be carried out at a temperature of 0° C. for 0.5=5 hours. Note that it is desirable to use dried and dehydrated potassium fluoride and the aprotic polar solvent.

本発明の2 、4. 、6− )リフルオロベンゾニト
リルハ、コれを化学的に変換して、農薬や医薬とし゛こ
の活性をもつ化合物、染料或は写真感光杓料などに誘導
することができるので、それらの誘導体を合成するため
の中間体として有用である。
2, 4 of the present invention. , 6-) Lifluorobenzonitrile can be chemically converted into compounds, dyes, and photographic materials that have this activity as agricultural chemicals and medicines, so these derivatives can be Useful as an intermediate for synthesis.

例えば、2.4 、6− )リフルオロベンゾニトリル
を90%硫酸中に滴下し、70〜80℃で反応させて得
られる2゜4 、6− )リフルオロベンズアミド[1
点1.13〜145℃)を塩化メチレンに溶解させ、5
 (1’C前後でオキザリルクロリドを滴下した後還流
下で反応させて2.4.6−)リフルオロベンゾイルイ
ソシアネートとし、このもののジオキサン溶液中に、予
め調製された3、5−ノクロロー4−(3−クロロ−5
−)IJフルオロメチル−2−ビリノルオキシ)アニリ
ンのジオキサン溶液を滴下して反応させると、N−(2
,4,ロートリフルオロベンゾイル)−N’ −(3,
5−ジクロロ−4−(3−2− クロロ−5−トリフルオロメチル−2−ピリジルオえシ
)7=ニル]ウレア(融点226・〜229’C)か2
+’Jられる。
For example, 2.4,6-)lifluorobenzonitrile is added dropwise to 90% sulfuric acid and reacted at 70 to 80°C.
1.13-145℃) in methylene chloride,
(After adding oxalyl chloride dropwise at around 1'C, it is reacted under reflux to obtain 2.4.6-)lifluorobenzoyl isocyanate, and in a dioxane solution of this, 3,5-nochloro-4- (3-chloro-5
-) IJ fluoromethyl-2-bilinoloxy) aniline in dioxane solution is added dropwise to react, N-(2
,4, rottrifluorobenzoyl)-N'-(3,
5-dichloro-4-(3-2-chloro-5-trifluoromethyl-2-pyridyl)urea (melting point 226-229'C) or 2
+'J is received.

この最終化合物は、特開昭57−2258号公報に記載
されているよ)に、4IIIJの有害虫、特1こ有゛占
毘虫のvJ除1こイ■効である。
This final compound, as described in Japanese Patent Application Laid-open No. 57-2258, is highly effective against the vJ of 4IIIJ harmful insects, especially the common insect pest.

西紀2 、4. 、6− )リフルオロベンズ′アミド
′は、例えば゛、2 、4.6−1リフルオロベンゾニ
Fリルを70%IIIIL酸中に渦下し、還流温度で3
〜・1時間反応させてイυられる2 、 4 。
Saiki 2, 4. , 6-) Lifluorobenz'amide' can be prepared by, for example, ``2, 4.6-1 LifluorobenzoniFlyl is vortexed in 70% IIIL acid and refluxed for 3 hours.
~・Let it react for 1 hour and then turn it off 2, 4.

6−1リフルオロ安息香酸(融点l、41へ・1・12
.5℃)にハロゲン化剤、例えば塩化チオニルを加えて
:p 、 +1. 、6− )リフルオロ安息香酸クロ
リドと【7、二のものにアンモニアを作用させても曲る
ことかて外る。
6-1 Lifluorobenzoic acid (melting point l, to 41・1・12
.. 5° C.) by adding a halogenating agent, such as thionyl chloride: p, +1. , 6-) Lifluorobenzoic acid chloride and [7. Even if ammonia is applied to the second product, it will not bend.

次に、本発明化合物の共体的合成例を記載[る。Next, an example of the cooperative synthesis of the compound of the present invention will be described.

介a(all 2.4.(’r−)リフルAロベンヅニ
1す/lの合Ik7ノ化カリウム3./lε;g、ジメ
チル入ルホキシド2 (l r二c:及びトルエン10
ccをフラスコに投入【5、内温か2 (1(1°Cに
なるまで共沸脱水して系内の水分を完全に除去した。次
いで2,4.6−)リクロロベンゾニトリル2gを加え
−ζ攪件ド還流状態で3時間反応させた。反応終了後、
生成物を水中に投入し、エーテル抽出した。次いで抽出
層を乾燥させ、3− エーテルを留去して沸点106−108°C/ 75+
n+++ Hgの目的物1.1gを得た。
A (all 2.4. ('r-) Rifle A Robendzuni 1 s/l combination Ik 7 potassium chloride 3./l ε; g, dimethyl sulfoxide 2 (l r 2 c: and toluene 10
cc was put into the flask [5, the internal temperature was 2 (1 (1°C), and the water in the system was completely removed by azeotropic dehydration. Then, 2 g of 2,4.6-)lichlorobenzonitrile was added. -ζ The reaction was carried out under stirring and reflux for 3 hours. After the reaction was completed,
The product was poured into water and extracted with ether. The extracted layer was then dried and the 3-ether was distilled off to a boiling point of 106-108°C/75+
1.1 g of the target product of n+++ Hg was obtained.

なお、前記合成例で使用した2、4..6−)リクロロ
ベンゾニトリルは、例えば下記の方法(1)で、1,3
.5−MJクロロベンゼンを臭素化して2,4,6−)
リクロロブロモベンゼンとし、二のものをノブ法(2)
でシアノ化して得られる。
In addition, 2, 4. used in the above synthesis example. .. 6-) Lichlorobenzonitrile can be prepared by, for example, the following method (1).
.. 5-MJ Chlorobenzene is brominated to produce 2,4,6-)
Using dichlorobromobenzene, the second one is the Nobu method (2)
It can be obtained by cyanation with

(1) 2.4.6−)リクロロブロモベンセンの合成
1.3.5−)リクロロベンゼン65gをフラスコに投
入し、8 (1’Cに別温して完全に溶解させ、そこ・
\塩化アルミニウム4gを加えた後、更に臭素64ビを
約6時間に亘って滴下し、攪拌下で臭素化反応を行なっ
た。
(1) 2.4.6-) Synthesis of Lichlorobromobenzene 1.3.5-) 65 g of Lichlorobenzene was put into a flask, heated separately to 1'C to completely dissolve it, and then
After adding 4 g of aluminum chloride, 64 bromine was further added dropwise over about 6 hours to carry out a bromination reaction with stirring.

反応終了後、生成物(冷却し、塩化メチレン約1ρ及び
水1ρを加えて抽出した。抽出層を水洗、乾燥した後塩
化メチレンを留去し、更に精留して2 、4. 、6−
 )リクロロブロモベンゼン(融点63.4℃)65.
4Bを得た。
After the reaction was completed, the product was cooled and extracted by adding about 1 ρ of methylene chloride and 1 ρ of water. The extracted layer was washed with water and dried, then the methylene chloride was distilled off, and further rectified to give 2, 4., 6-
) Lichlorobromobenzene (melting point 63.4°C) 65.
I got 4B.

(2) 2.4.6〜Fリクロロベンゾニトリルの合成
前記(1)の方法で得られた2、4.6−)リクロロブ
ロモベンゼン3.4Rにシアン化第−銅1.34g及び
ツメチルホルムアミド4ccを加えて昇温し、155°
Cで約8時4− 間攪打丁に反応させた。
(2) Synthesis of 2.4.6-F-lichlorobenzonitrile Add 1.34 g of cupric cyanide to 3.4R of 2,4.6-)lichlorobromobenzene obtained by the method (1) above. Add 4 cc of trimethylformamide and raise the temperature to 155°.
The reaction was carried out with stirring at C for about 8:4 hours.

反応終1゛後、生成物を20%塩化第二二鉄水溶ン1ヤ
中に投入し、塩化メチレンで抽出した。次いで抽出層の
塩化メチレンを留去し、カラムクロマトグラフィーで粕
駁して、融点114・〜115’Cの2.4.6−1リ
クロロペンゾニトリル1.55gを得た。
One hour after completion of the reaction, the product was poured into a 20% aqueous ferric chloride solution and extracted with methylene chloride. Next, methylene chloride in the extracted layer was distilled off, and the residue was filtered by column chromatography to obtain 1.55 g of 2.4.6-1-lichlorobenzonitrile having a melting point of 114-115'C.

特許出願人 石原産業株式会社 一5完−Patent applicant: Ishihara Sangyo Co., Ltd. 15 complete

Claims (1)

【特許請求の範囲】[Claims] (1) 2,4.6−)リフルオロベンゾニトリル(2
) 2 、4 、6− )ジクロロベンゾニトリルを弗
素化することを特徴とする2、4.6−ドリフルオロベ
ンゾニトリルの製造方法。
(1) 2,4.6-)lifluorobenzonitrile (2
) 2,4,6-) A method for producing 2,4,6-drifluorobenzonitrile, which comprises fluorinating dichlorobenzonitrile.
JP13174183A 1983-07-19 1983-07-19 2,4,6-trifluorobenzonitrile Granted JPS6023358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13174183A JPS6023358A (en) 1983-07-19 1983-07-19 2,4,6-trifluorobenzonitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13174183A JPS6023358A (en) 1983-07-19 1983-07-19 2,4,6-trifluorobenzonitrile

Publications (2)

Publication Number Publication Date
JPS6023358A true JPS6023358A (en) 1985-02-05
JPH037662B2 JPH037662B2 (en) 1991-02-04

Family

ID=15065103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13174183A Granted JPS6023358A (en) 1983-07-19 1983-07-19 2,4,6-trifluorobenzonitrile

Country Status (1)

Country Link
JP (1) JPS6023358A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021605A (en) * 1987-09-14 1991-06-04 Sds Biotech K.K. Trifluorobenzene compounds
US5200548A (en) * 1984-06-04 1993-04-06 Bayer Aktiengesellschaft 2,4,5-Trihalogeno- and 2,3,4,5-tetrahalogenobenzene derivatives
US5530158A (en) * 1984-06-04 1996-06-25 Bayer Aktiengesellschaft 2,4,5-trihalogeno- and 2,3,4,5-tetrahalogenobenzene derivatives
CN113929595A (en) * 2021-11-12 2022-01-14 江苏新河农用化工有限公司 Preparation method of 2, 6-difluorobenzonitrile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604159A (en) * 1983-06-23 1985-01-10 Ishihara Sangyo Kaisha Ltd Production of fluorobenzonitrile compound

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604159A (en) * 1983-06-23 1985-01-10 Ishihara Sangyo Kaisha Ltd Production of fluorobenzonitrile compound

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200548A (en) * 1984-06-04 1993-04-06 Bayer Aktiengesellschaft 2,4,5-Trihalogeno- and 2,3,4,5-tetrahalogenobenzene derivatives
US5362909A (en) * 1984-06-04 1994-11-08 Bayer Aktiengesellschaft Process for the preparation of 3-chloro-2,4,5-trifluorobenzoyl chloride, 2,4,5-trifuluorobenzoyl fluoride, and 2,3,4,5-tetrahalogenobenzene derivatives
US5530158A (en) * 1984-06-04 1996-06-25 Bayer Aktiengesellschaft 2,4,5-trihalogeno- and 2,3,4,5-tetrahalogenobenzene derivatives
US5565614A (en) * 1984-06-04 1996-10-15 Bayer Aktiengesellschaft 2,4,5-trihalogeno-and 2,3,4,5-tetrahalogenobenzene derivatives
US5021605A (en) * 1987-09-14 1991-06-04 Sds Biotech K.K. Trifluorobenzene compounds
CN113929595A (en) * 2021-11-12 2022-01-14 江苏新河农用化工有限公司 Preparation method of 2, 6-difluorobenzonitrile

Also Published As

Publication number Publication date
JPH037662B2 (en) 1991-02-04

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