JPS62205065A - Production of oxazolone compound - Google Patents

Production of oxazolone compound

Info

Publication number
JPS62205065A
JPS62205065A JP4704786A JP4704786A JPS62205065A JP S62205065 A JPS62205065 A JP S62205065A JP 4704786 A JP4704786 A JP 4704786A JP 4704786 A JP4704786 A JP 4704786A JP S62205065 A JPS62205065 A JP S62205065A
Authority
JP
Japan
Prior art keywords
formula
compound
acid ester
carbamic acid
fluorine ion
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
JP4704786A
Other languages
Japanese (ja)
Inventor
Makoto Shimizu
真 清水
Hirosuke Yoshioka
吉岡 宏輔
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.)
RIKEN Institute of Physical and Chemical Research
Original Assignee
RIKEN Institute of Physical and Chemical Research
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 RIKEN Institute of Physical and Chemical Research filed Critical RIKEN Institute of Physical and Chemical Research
Priority to JP4704786A priority Critical patent/JPS62205065A/en
Publication of JPS62205065A publication Critical patent/JPS62205065A/en
Pending legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

PURPOSE:To easily obtain an oxazolone compound useful as an intermediate for pharmaceuticals and agricultural chemicals in high yield, by cyclizing a carbamic acid ester in the presence of fluorine ion under olefin-producing condition. CONSTITUTION:A carbamic acid ester of formula I (R1 is hydrocarbon group; X is halogen) is cyclized in the presence of fluorine ion simultaneous to the formation of an olefin to obtain the compound of formula II. The fluorine ion-supplying compound is preferably a quaternary ammonium salt of formula III (R2-R5 are 1-16C alkyl, alkenyl or aromatic group) [e.g. tetra(n-butyl) ammonium fluoride]. The cyclization reaction is carried out by using 1-5 equivalent of the ion-supplying compound based on the carbamic acid ester and heating at 0-50 deg.C for 2-24hr. EFFECT:The separation and purification of the objective compound can be easily carried out since there is little by-product.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、医薬品や農薬を製造するために用いる中間体
として有用なオキサシロン化合物の製造方法に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing oxacilone compounds useful as intermediates used for producing pharmaceuticals and agricultural chemicals.

〔従来の技術〕[Conventional technology]

2 (3H)−オキサシロン化合物は、従来下記の化合
物A、B、Cを用いて合成されている。
2 (3H)-Oxacylone compounds have conventionally been synthesized using the following compounds A, B, and C.

しかしながら、上記のようにいずれの化合物を用いても
反応を多段階で行なわなけれならず、置換基も限られて
おり反応条件も過酷であって、経済的でないという問題
がある。さらにこれらの方法には収率も良好でないとい
う問題がある。
However, as mentioned above, no matter which compound is used, the reaction must be carried out in multiple stages, the number of substituents is limited, the reaction conditions are harsh, and there are problems in that it is not economical. Furthermore, these methods have the problem of poor yields.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従って、本発明は、簡易な手段を用いて高収率でオキサ
シロン化合物を製造できる製造方法を提供することを目
的とする。
Therefore, an object of the present invention is to provide a manufacturing method that can produce oxacilone compounds in high yield using simple means.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、カルバミン酸エステルを出発物質とし、フッ
素アニオンの塩基性を選択的に利用することにより、非
常に温和な条件で、オレフィンの生成と環化反応が進行
し、2 (3H)−オキサシロン化合物を収率よく合成
できるとの知見に基づいてなされたのである。すなわち
、本発明は、一般式(1): %式%(1) (式中、R1は炭化水素基を示し、Xはハロゲンを示す
。) で表わされるカルバミン酸エステルを、フッ素イオンの
存在下でオレフィンの生成と同時に環化させることを特
徴とす・る一般式(■):ξ (式中、R,及びXは式(1)と同じ意味を有する。) で表わされるオキサシロン化合物の製造方法。
The present invention uses a carbamate ester as a starting material and selectively utilizes the basicity of the fluorine anion to proceed the production of olefin and the cyclization reaction under very mild conditions. This was done based on the knowledge that the compound could be synthesized with high yield. That is, the present invention provides a method for treating a carbamate ester represented by the general formula (1): % formula % (1) (wherein R1 represents a hydrocarbon group and X represents a halogen) in the presence of fluorine ions. Production of an oxacylone compound represented by the general formula (■): ξ (wherein R and Method.

本発明の製造方法において出発原料として使用するカル
バミン酸エステルは、例えば1.3−ジハロ−2−プロ
パツールとイソシアネートとカラ容易に製造される。本
発明では、一般式(1)で表わされる化合物のうち、一
般式(I)巾のRIがフェニル基、ナフチル基、アルキ
ル基、置換基(ハロゲンなど)を有するこれらの基であ
るものを用いるのが好ましい。又式中、Xのハロゲンと
しては、塩素又は臭素が好ましく、式中の2つのXがと
もに塩素及び/又は臭素である。
The carbamate ester used as a starting material in the production method of the present invention is easily produced from, for example, 1,3-dihalo-2-propatol and isocyanate. In the present invention, among the compounds represented by the general formula (1), those whose RI of the general formula (I) width is a phenyl group, a naphthyl group, an alkyl group, or any of these groups having a substituent (such as a halogen) are used. is preferable. In the formula, the halogen of X is preferably chlorine or bromine, and both X's in the formula are chlorine and/or bromine.

本発明では、上記カルバミン酸エステルをフッ素イオン
の存在下で環化させることを特徴とするが、フッ素イオ
ンを提供する化合物としては、フッ素アニオンを放出す
る任意の化合物が用いられる。これらの化合物のうち、
第4級アンモニウムフルオリド、特に一般式(■): (式中、R2〜R5は、炭素数1〜16のアルキル基、
アルケニル基又は芳香族基を示す。)で表わされる第4
級アンモニウム塩を用いるのが好ましい。上記式(II
I)において、R2〜R3は同一でも異なっていてもよ
く、特にR2〜R5は炭素数1〜16のアルキル基が好
ましい。式中芳香族基としてはフェニル基、ベンジル基
などが好ましい。上記第4級アンモニウム塩として、具
体的には、テトラ(n−ブチル)アンモニウムフロリド
(以下、TBAFという)、テトラエチルアンモニウム
フルオリド、テトラメチルアンモニウムフルオリド、ベ
ンジルトリメチルアンモニウムフルオリドが例示される
The present invention is characterized in that the above-mentioned carbamate ester is cyclized in the presence of fluorine ions, and any compound that releases fluorine anions can be used as the compound that provides fluorine ions. Of these compounds,
Quaternary ammonium fluoride, especially general formula (■): (wherein R2 to R5 are alkyl groups having 1 to 16 carbon atoms,
Indicates an alkenyl group or an aromatic group. )
Preferably, grade ammonium salts are used. The above formula (II
In I), R2 to R3 may be the same or different, and R2 to R5 are preferably alkyl groups having 1 to 16 carbon atoms. In the formula, the aromatic group is preferably a phenyl group, a benzyl group, or the like. Specific examples of the quaternary ammonium salt include tetra(n-butyl)ammonium fluoride (hereinafter referred to as TBAF), tetraethylammonium fluoride, tetramethylammonium fluoride, and benzyltrimethylammonium fluoride.

本発明では、上記第4級アンモニウム塩を、カルバミン
酸エステルに対して、2.2〜10当量、好ましくは1
〜5当量の割合で存在させ、0℃〜50℃の温度に2〜
24時間加熱して下記の環化反応を行なうのである。
In the present invention, the quaternary ammonium salt is used in an amount of 2.2 to 10 equivalents, preferably 1 equivalent to the carbamate ester.
~5 equivalents and at a temperature of 0°C to 50°C.
The following cyclization reaction is carried out by heating for 24 hours.

尚、上記反応は、テトラヒドロフラン(TIIF>、ジ
エチルエーテル、ジオキサンなどの不活性溶媒の下で行
なうことができ、又、モレキコラーシーブを共存させる
ことが望ましい。
The above reaction can be carried out in the presence of an inert solvent such as tetrahydrofuran (TIIF), diethyl ether, dioxane, etc., and it is preferable to coexist with a molecular sieve.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、カルバミン酸エステルから容易に、か
つ高収率でオキサシロン化合物を製造することができる
。又副生物もほとんどないので単離精製も容易である。
According to the present invention, oxacilone compounds can be easily produced from carbamate esters in high yield. Furthermore, since there are almost no by-products, isolation and purification is easy.

次に実施例により本発明を具体的に説明する。Next, the present invention will be specifically explained with reference to Examples.

〔実施例〕〔Example〕

実施例1 1.3−ジブロモ−2−プロピルフェニルカーバメート
のT HF溶液に4Δモレキユラーシーブス存在下2.
5当量のn −Bu4NF ・3)120 (TBAF
 )を作用させ50℃で24時間攪拌して環化させた。
Example 1 1. A THF solution of 3-dibromo-2-propylphenyl carbamate in the presence of 4Δ molecular sieves.
5 equivalents of n-Bu4NF ・3) 120 (TBAF
) and stirred at 50°C for 24 hours to cyclize.

後処理後PLCにより単離したところ、目的物である下
記の5−メチル−3−フェニル−2(3H)−オキサシ
ロンが79%の収率で得られた。又、出発原料として3
−ジクロロ−2−プロピルフェニルカルバメートを用い
、かつ4.0当MのTBAFを用いた以外は同様にして
室温下で処理したところ目的化合物の中間体が76%の
収率で得られた。
After post-treatment, the product was isolated by PLC, and the desired product, 5-methyl-3-phenyl-2(3H)-oxacilone shown below, was obtained in a yield of 79%. Also, as a starting material, 3
-Dichloro-2-propylphenyl carbamate and 4.0 equivalent M of TBAF were used, but the same procedure was carried out at room temperature to obtain an intermediate of the desired compound in a yield of 76%.

これをさらにTBAFと50℃で処理することにより容
易に異性化し、目的化合物である5−メチル−3−フェ
ニル−2(3H)−オキサシロンが72%の収率で得ら
れた。
This was further treated with TBAF at 50°C to easily isomerize, and the target compound, 5-methyl-3-phenyl-2(3H)-oxacilone, was obtained in a yield of 72%.

生成物の同定データを次に示す。Product identification data is shown below.

目的化合物: NMR([’DC1,)  :  δ 2.18   
(d、  3H% J=1.8511z) 、6.57
 (q、  I HSJ=1,8011z ) 、7.
20−7.62 (m15 H) I  R(KOr)  :   1750  (sh)
、 1740、1685.1595.1500.140
0.1380.1120.970.755.680実施
例2 出発原料をかえ、実施例1と同様にしてオキサシロン化
合物を製造した。使用原料、使用したT BへFの当量
、生成物及び収率をまとめて表−1に示す。
Target compound: NMR (['DC1,): δ 2.18
(d, 3H% J=1.8511z), 6.57
(q, IHSJ=1,8011z), 7.
20-7.62 (m15 H) IR (KOr): 1750 (sh)
, 1740, 1685.1595.1500.140
0.1380.1120.970.755.680 Example 2 An oxacylone compound was produced in the same manner as in Example 1 except that the starting materials were changed. The raw materials used, the equivalent amount of F to TB used, the products, and the yields are summarized in Table 1.

次に生成物の同定データを次に示す。Next, the identification data of the product is shown below.

No、  1、No、  2の生成化合物:NMIII
 (ClICA、) :δ2.16  (d、 3H,
J=1.80fiz) 、6.53 (q 、  l 
H,J =1.8011z) 7.20−7.56(m
、4H) IR(に口r)  :   1760(sh) 、17
40.1680.1590 。
No. 1, No. 2 product compounds: NMIII
(ClICA,): δ2.16 (d, 3H,
J=1.80fiz), 6.53 (q, l
H, J = 1.8011z) 7.20-7.56 (m
, 4H) IR (Niguchi r): 1760 (sh), 17
40.1680.1590.

1495.1390.1280.1200.1120.
970.725No、 3 の生成化合物: NMR(C口CL):  δ 2.22   (d、 
 3 1−1 、 J=1,80Ilz) 、6.42
 (q、  L H,J =1,8011z)、7.4
0−8.00(m、7H)
1495.1390.1280.1200.1120.
970.725No, 3 product compound: NMR (C port CL): δ 2.22 (d,
3 1-1, J=1,80Ilz), 6.42
(q, L H, J = 1,8011z), 7.4
0-8.00 (m, 7H)

Claims (2)

【特許請求の範囲】[Claims] (1)一般式( I ): ▲数式、化学式、表等があります▼……………‥‥(
I ) (式中、R_1は炭化水素基を示し、Xはハロゲンを示
す。) で表わされるカルバミン酸エステルを、フッ素イオンの
存在下でオレフィン生成をともない環化させることを特
徴とする一般式(II): ▲数式、化学式、表等があります▼……………………(
II) (式中R_1及びXは式( I )と同じ意味を有する。
) で表わされるオキサゾロン化合物の製造方法。
(1) General formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼…………………………(
I) (In the formula, R_1 represents a hydrocarbon group and X represents a halogen.) The general formula ( II): ▲There are mathematical formulas, chemical formulas, tables, etc.▼……………………(
II) (In the formula, R_1 and X have the same meaning as in formula (I).
) A method for producing an oxazolone compound represented by
(2)フッ素イオンが一般式(III): ▲数式、化学式、表等があります▼…………‥(III) (式中、R_2〜R_5は、炭素数1〜16のアルキル
基、アルケニル基又は芳香族基を示す。)で表わされる
第4級アンモニウム塩に由来する特許請求の範囲第(1
)項記載の製造方法。
(2) Fluorine ion has the general formula (III): ▲There are mathematical formulas, chemical formulas, tables, etc.▼…………………… (III) (In the formula, R_2 to R_5 are alkyl groups or alkenyl groups having 1 to 16 carbon atoms. or aromatic group) is derived from the quaternary ammonium salt represented by
) The manufacturing method described in section 2.
JP4704786A 1986-03-04 1986-03-04 Production of oxazolone compound Pending JPS62205065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4704786A JPS62205065A (en) 1986-03-04 1986-03-04 Production of oxazolone compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4704786A JPS62205065A (en) 1986-03-04 1986-03-04 Production of oxazolone compound

Publications (1)

Publication Number Publication Date
JPS62205065A true JPS62205065A (en) 1987-09-09

Family

ID=12764253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4704786A Pending JPS62205065A (en) 1986-03-04 1986-03-04 Production of oxazolone compound

Country Status (1)

Country Link
JP (1) JPS62205065A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016088893A (en) * 2014-11-05 2016-05-23 国立研究開発法人産業技術総合研究所 2-oxazolones and manufacturing method of 2-oxazolones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016088893A (en) * 2014-11-05 2016-05-23 国立研究開発法人産業技術総合研究所 2-oxazolones and manufacturing method of 2-oxazolones

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