JPH01125354A - 4-acetylamino-3-fluorophenoxyacetic acid and its production - Google Patents

4-acetylamino-3-fluorophenoxyacetic acid and its production

Info

Publication number
JPH01125354A
JPH01125354A JP28480987A JP28480987A JPH01125354A JP H01125354 A JPH01125354 A JP H01125354A JP 28480987 A JP28480987 A JP 28480987A JP 28480987 A JP28480987 A JP 28480987A JP H01125354 A JPH01125354 A JP H01125354A
Authority
JP
Japan
Prior art keywords
acetylamino
acid
fluorophenol
compound
reaction
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
JP28480987A
Other languages
Japanese (ja)
Other versions
JP2517991B2 (en
Inventor
Masayuki Enomoto
榎本 雅行
Toru Haga
徹 葉賀
Hideyoshi Nagano
栄喜 永野
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 JP62284809A priority Critical patent/JP2517991B2/en
Publication of JPH01125354A publication Critical patent/JPH01125354A/en
Application granted granted Critical
Publication of JP2517991B2 publication Critical patent/JP2517991B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

NEW MATERIAL:4-Acetylamino-3-fluorophenoxyacetic acid. USE:A starting substance for 2-[4-substituted-7-fluoro-2H-1,4-benzoxazine-3H(4H)- one-6-yl-]-4,5,6,7-tetrahydro-2H-isoindole-1,3-dione, a herbicide. PREPARATION:The titled compound is obtained by reaction of 4-acetylamino-3- fluorophenol with a haloacetic acid such as chloroacetic or bromoacetic acid in the presence of a dehydrogenating agent such as sodium hydroxide, in a solvent such as water or dioxane at 20-200 deg.C to give the title compound. The amount of the haloacetic acid used is 1-5 equivalents per mol. of the 4- acetylamino-3-fluorophenol and the dehydrohalogenating agent is 1-5 equivalents.

Description

【発明の詳細な説明】 本発明は新規なフェノキシ酢酸誘導体およびその製造法
に関するものである。さらに詳しくは、特開昭61−7
6486号公報に記載の除草剤等を製造する上で有用な
製造原料である4−アセチルアミノ−8−フルオロフェ
ノキシ酢酸(以下、本発明化合物と記す)およびその製
造法を提供するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel phenoxyacetic acid derivative and a method for producing the same. For more details, please refer to JP-A-61-7
The present invention provides 4-acetylamino-8-fluorophenoxyacetic acid (hereinafter referred to as the compound of the present invention), which is a useful raw material for producing the herbicides and the like described in JP-A No. 6486, and a method for producing the same.

まず、本発明化合物の製造法について説明する。First, the method for producing the compound of the present invention will be explained.

本発明化合物は、4−アセチルアミノ−8−フルオロフ
ェノールとクロロ酢酸、ブロモ酢酸、ヨード酢酸等のハ
ロ酢酸とを、通常、脱ハロゲン化水素剤の存在下に反応
させることによって製造される。
The compound of the present invention is produced by reacting 4-acetylamino-8-fluorophenol with a haloacetic acid such as chloroacetic acid, bromoacetic acid, or iodoacetic acid, usually in the presence of a dehydrohalogenating agent.

該反応に使用される脱ハロゲン化水素剤としては水酸化
リチウム、水酸化ナトリウム、水酸化カリウム、水酸化
テトラメチルアンモニウム等の水酸化物、炭酸ナトリウ
ム、炭酸カリウム等の炭酸塩、炭酸水素ナトリウム、炭
酸水素カリウム等の炭酸水素塩、水素化ナトリウムなど
があげられる。
The dehydrohalogenating agent used in the reaction includes hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, and tetramethylammonium hydroxide, carbonates such as sodium carbonate and potassium carbonate, sodium hydrogen carbonate, Examples include hydrogen carbonates such as potassium hydrogen carbonate, sodium hydride, and the like.

反応に供せられる試剤の量は、通常、4−アセチルアミ
ノ−8−フルオロフェノール1当量に対して、ハロ酢酸
は1〜5当量であり、脱ハロゲン化水素剤は1〜5当聞
である。反応に用いられる溶媒としては例えば、ジオキ
サン、テトラヒドロフラン等のエーテル類、アセトン等
のケトン類、N、N−ジメチルホルムアミド等のアミド
類、ジメチルスルホキシド、スルホラン等の硫黄化合物
、ヘキサメチルホスホルトリアミド等のリン化合物、水
などあるいはそれらの混合物があげられる。
The amount of reagents used in the reaction is usually 1 to 5 equivalents of haloacetic acid and 1 to 5 equivalents of dehydrohalogenation agent per equivalent of 4-acetylamino-8-fluorophenol. . Examples of solvents used in the reaction include ethers such as dioxane and tetrahydrofuran, ketones such as acetone, amides such as N,N-dimethylformamide, sulfur compounds such as dimethyl sulfoxide and sulfolane, and hexamethylphosphorotriamide. Examples include phosphorus compounds, water, etc., or mixtures thereof.

反応温度は通常20〜200℃、好ましくは60〜12
0℃の範囲である。反応終了後、反応液は酸性下で有機
溶媒抽出、濃縮等の通常の後処理を行い、必要ならば、
再結晶、クロマトグラフィー等の操作を行う。
The reaction temperature is usually 20-200°C, preferably 60-12°C.
It is in the range of 0°C. After the reaction is completed, the reaction solution is subjected to conventional post-treatments such as organic solvent extraction and concentration under acidic conditions, and if necessary,
Perform operations such as recrystallization and chromatography.

なお、本発明化合物を製造する際の原料化合物である4
−アセチルアミノ−8−フルオロフェノールは4−アミ
ノ−8−フルオロフェノールを塩化アセチル、無水酢酸
等のアセチル化剤と反応させることにより得ることがで
きる。
In addition, 4, which is a raw material compound when producing the compound of the present invention,
-Acetylamino-8-fluorophenol can be obtained by reacting 4-amino-8-fluorophenol with an acetylating agent such as acetyl chloride or acetic anhydride.

本発明化合物は下記の経路により、有用な除草性化合物
である2−〔4−置換−7−フルオロ−2H−1,4−
ベンゾオキサジン−8(4H)−一オン−6−イル)−
4,5,6,7−テトラヒドロ−2H−イソインドール
−1,8−ジオンに導かれる。
The compound of the present invention is a useful herbicidal compound, 2-[4-substituted-7-fluoro-2H-1,4-
Benzoxazin-8(4H)-mono-6-yl)-
This leads to 4,5,6,7-tetrahydro-2H-isoindole-1,8-dione.

〔式中、Rはアルキル基、アルケニル基、アルキニル基
またはアルコキシアルキル基を表わし、R′はアルキル
基を表わす。〕 以下、本発明化合物の製造例を具体例にて示すが、本発
明は下記の例のみに限定されるものではない。
[In the formula, R represents an alkyl group, an alkenyl group, an alkynyl group, or an alkoxyalkyl group, and R' represents an alkyl group. ] Hereinafter, specific examples of manufacturing the compounds of the present invention will be shown, but the present invention is not limited to the following examples.

製造例 4−アセチルアミノ−8−フルオロフェノールを、重曹
1.26fを水5.88fに溶かした液に加え、80〜
40°Cで1時間撹拌した。
Production Example 4 - Acetylamino-8-fluorophenol was added to a solution of 1.26 f of baking soda dissolved in 5.88 f of water, and
Stirred at 40°C for 1 hour.

これに、水酸化ナトリウム1.10f$クロロ酢酸2.
28^水6.81Fに溶かした液を加え、90″Cで2
時間撹拌した。反応混合物を放冷した後濃塩酸でpH2
とし、酢酸エチルで抽出、抽出液を乾燥後、減圧下に溶
媒を留去して4−アセチルアミノ−8−フルオロフェノ
キシ酢酸2.Ofを得た。
Add to this 1.10 f of sodium hydroxide and 2.0 f of chloroacetic acid.
28^ Add the solution dissolved in water 6.81F and heat at 90″C for 2
Stir for hours. After cooling the reaction mixture, the pH was adjusted to 2 with concentrated hydrochloric acid.
After extracting with ethyl acetate and drying the extract, the solvent was distilled off under reduced pressure to obtain 4-acetylamino-8-fluorophenoxyacetic acid. I got Of.

mp 152〜158℃ 次に、本発明化合物を製造する際の原料化合物である4
−アセチルアミノ−8−フルオロフェノールの製造例を
参考例として示す。
mp 152-158°C Next, 4 which is a raw material compound when producing the compound of the present invention
A production example of -acetylamino-8-fluorophenol is shown as a reference example.

参考例 4−アミノ−8−フルオロフェノール 10.1Fを酢酸81.49fに溶かし、無水酢酸8.
92fを加え75°Cで2時間加熱撹拌した。反応液を
放冷後氷水にあけ、酢酸エチルで抽出し、水洗後乾燥、
次いで減圧下に溶媒を留去して、残渣をシリカゲルクロ
マトグラフィー(展開溶媒;酢酸エチル:ヘキサン=1
:1)に付し、4−アセチルアミノ−8−フルオロフェ
ノール6.81を得た。
Reference Example 4-Amino-8-fluorophenol 10.1F was dissolved in 81.49F of acetic acid, and 8.1F of acetic anhydride was dissolved.
92f was added, and the mixture was heated and stirred at 75°C for 2 hours. After cooling the reaction solution, it was poured into ice water, extracted with ethyl acetate, washed with water, dried,
Then, the solvent was distilled off under reduced pressure, and the residue was subjected to silica gel chromatography (developing solvent: ethyl acetate:hexane = 1
:1) to obtain 6.81 of 4-acetylamino-8-fluorophenol.

mp 114〜115℃ (6完)mp 114~115℃ (6 complete)

Claims (2)

【特許請求の範囲】[Claims] (1)4−アセチルアミノ−8−フルオロフェノキシ酢
酸。
(1) 4-acetylamino-8-fluorophenoxyacetic acid.
(2)4−アセチルアミノ−8−フルオロフェノールと
ハロ酢酸とを反応させることを特徴とする4−アセチル
アミノ−8−フルオロフェノキシ酢酸の製造法。
(2) A method for producing 4-acetylamino-8-fluorophenoxyacetic acid, which comprises reacting 4-acetylamino-8-fluorophenol and haloacetic acid.
JP62284809A 1987-11-10 1987-11-10 4-acetylamino-3-fluorophenoxyacetic acid Expired - Lifetime JP2517991B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62284809A JP2517991B2 (en) 1987-11-10 1987-11-10 4-acetylamino-3-fluorophenoxyacetic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62284809A JP2517991B2 (en) 1987-11-10 1987-11-10 4-acetylamino-3-fluorophenoxyacetic acid

Publications (2)

Publication Number Publication Date
JPH01125354A true JPH01125354A (en) 1989-05-17
JP2517991B2 JP2517991B2 (en) 1996-07-24

Family

ID=17683293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62284809A Expired - Lifetime JP2517991B2 (en) 1987-11-10 1987-11-10 4-acetylamino-3-fluorophenoxyacetic acid

Country Status (1)

Country Link
JP (1) JP2517991B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5166401A (en) * 1991-06-25 1992-11-24 Pfizer Inc Intermediates for 5-fluoro-6-chlorooxindole
US5210212A (en) * 1991-06-25 1993-05-11 Pfizer Inc Process for 5-fluoro-6-chlorooxindole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5166401A (en) * 1991-06-25 1992-11-24 Pfizer Inc Intermediates for 5-fluoro-6-chlorooxindole
US5210212A (en) * 1991-06-25 1993-05-11 Pfizer Inc Process for 5-fluoro-6-chlorooxindole

Also Published As

Publication number Publication date
JP2517991B2 (en) 1996-07-24

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