JPS624274A - Aminopyrazole derivative and production thereof - Google Patents

Aminopyrazole derivative and production thereof

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Publication number
JPS624274A
JPS624274A JP14367185A JP14367185A JPS624274A JP S624274 A JPS624274 A JP S624274A JP 14367185 A JP14367185 A JP 14367185A JP 14367185 A JP14367185 A JP 14367185A JP S624274 A JPS624274 A JP S624274A
Authority
JP
Japan
Prior art keywords
formula
lower alkyl
alkyl group
derivative
expressed
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
JP14367185A
Other languages
Japanese (ja)
Other versions
JPH0569106B2 (en
Inventor
Katsuyuki Morimoto
勝之 森本
Toshiaki Sato
敏明 佐藤
Susumu Yamamoto
進 山本
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.)
Nissan Chemical Corp
Original Assignee
Nissan Chemical Corp
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 Nissan Chemical Corp filed Critical Nissan Chemical Corp
Priority to JP14367185A priority Critical patent/JPS624274A/en
Publication of JPS624274A publication Critical patent/JPS624274A/en
Publication of JPH0569106B2 publication Critical patent/JPH0569106B2/ja
Granted legal-status Critical Current

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Abstract

NEW MATERIAL:An aminopyrazole derivative expressed by formula I (R<1>-R<3> are lower alkyl). EXAMPLE:Ethyl 5-amino-3-methoxy-1-methylpyrazole-4-carboxylate. USE:An intermediate for medicines and agricultural chemicals. PREPARATION:A ketene dithioacetal derivative expressed by formula II (R<4> is lower alkyl or benzyl) is reacted with an alcoholate expressed by the formula R<2>OM (M is alkali metal atom) and the resultant product is then reacted with a hydrazine derivative expressed by the formula R<1>NHNH2 to afford the aimed compound expressed by formula I simply from the readily synthesizable raw material in good yield.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は#規アミノピラゾール誘導体およびそれらの製
法に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to #normal aminopyrazole derivatives and methods for their production.

更に詳しくは1本発明は一般式(I):R1 〔式中R”、R”、R“はそれぞれ独立に低級アルキル
基を示す。〕 で表されるffrJILアミノピラゾール誘導体および
該誘導体の新規製造法に関する。
More specifically, the present invention relates to an ffrJIL aminopyrazole derivative represented by the general formula (I): R1 [wherein R'', R'', and R'' each independently represent a lower alkyl group] and a new production of the derivative. Regarding the law.

アミノピラゾール誘導体(1)は医薬、農薬等の中間体
として有用である。たとえば特願昭59−159177
号明#fK記載の除草剤の中間体として有用である。す
なわち、ヨーロッパ脣許公開87780号公報9.呑開
昭59−219281公報服、特願昭59−22109
5号明g*4に記載の方法を参考にしてピラゾールスル
ホンアミド誘導体(V)に導き、さらに前記特願昭59
−159177号明細番に従って目的とする除草剤を得
ることができる。
The aminopyrazole derivative (1) is useful as an intermediate for pharmaceuticals, agricultural chemicals, and the like. For example, patent application No. 59-159177
It is useful as an intermediate for the herbicide described in No. #fK. That is, European Patent Publication No. 87780 9. Nokai 1984-219281 Publication Clothes, Patent Application 1987-22109
The pyrazole sulfonamide derivative (V) was obtained by referring to the method described in No.
The desired herbicide can be obtained according to specification number -159177.

(V’) ta)  Nano、 ・HOlまたはNaN0.−H
Br(υ 銅塩またはSo。
(V') ta) Nano, ・HOl or NaN0. -H
Br(υ copper salt or So.

(c)  NaSビ (d)  01./酢酸、水 (e)  N電OHま九は炭酸アノモニウム(f)  
So、・銅塩 〔式中R’、R”およびR”は前記と同じ意味を示す。
(c) NaSbi (d) 01. / Acetic acid, water (e) N-OH maku is ammonium carbonate (f)
So, copper salt [wherein R', R'' and R'' have the same meanings as above.

〕従来の技術 5−アミノ−4−カルボキシピラゾール誘導体の製法と
して従来以下の方法が知られている。
[Prior Art] The following methods are conventionally known as methods for producing 5-amino-4-carboxypyrazole derivatives.

ゴ゛1に゛ 0式 〔R“は水素原子または低級アルキル基を示す。](ケ
ミカルアブストラクッ((Themical Abst
ructs ) 53巻20068f  (1959年
)参照)め (ヒエミ、ベリヒテ(Chemische Beric
hte ) 95巻2881貞 (1962年)参照) No。
Go 1 shows the formula "0 [R" represents a hydrogen atom or a lower alkyl group] (Chemical Abst.
ructs) Volume 53, 20068f (1959))
hte) Volume 95, 2881 Sada (1962)) No.

〔Roは低級アルキル基を示す。] (]ファルマジー PhavTnazie ) 30巻
 802頁(1’975年)参照) (ケミカルアブストラクッ((hemical Aba
tructa ) 95 巻95181a  (198
0年)参照)(ジャーナル・オブ・オーガニック・ケミ
ストリー(Journal Of Organic C
!hemistry ) 40巻272o頁(1975
年)参照) 〔R“は前記と同じ意味を示す。〕 (〕ファルマジー Pharmazle ) 31巻5
32頁(1976年)参照) 以上から5−アミノ−4−カルボキシピラゾール誘導体
におけるピラゾール45位の置換基として知られている
ものは水素原子、低級アルキル基、アルキルチオ基、メ
ルカプト基、アミノ基、置換アミノ基、ヒドロキシ基等
であり、アルコキシ基の置換した本発明化合物(I)は
未だ文献未記載の新規化合物であることがわかる。
[Ro represents a lower alkyl group. (Refer to PhavTnazie) Vol. 30, p. 802 (1'975)) (Chemical Aba
tructa) Volume 95 95181a (198
) (Journal of Organic Chemistry)
! hemistry) Vol. 40, p. 272 (1975
(2013)) [R" has the same meaning as above.] (Pharmazle) Volume 31, 5
(See p. 32 (1976)) From the above, known substituents at the 45th position of pyrazole in 5-amino-4-carboxypyrazole derivatives are hydrogen atoms, lower alkyl groups, alkylthio groups, mercapto groups, amino groups, and substituents. It can be seen that the compound (I) of the present invention substituted with an alkoxy group, such as an amino group or a hydroxy group, is a novel compound that has not yet been described in any literature.

一方、上記(1)〜(6)の従来の技術を参考にして本
発明化合物(1)全合成することも以下に示す理由から
困難である。
On the other hand, it is also difficult to completely synthesize the compound (1) of the present invention by referring to the conventional techniques (1) to (6) above for the reasons shown below.

上記反応式(1)において、原料の合成はにより行われ
るがR“とじては、水素原子のオルトギ酸エチル、メチ
ル基のオルト酢酸エチル等水素原子または低級アルキル
基に限られている。
In the above reaction formula (1), the raw materials are synthesized by R'', which is limited to hydrogen atoms or lower alkyl groups, such as ethyl orthoformate, which is a hydrogen atom, and ethyl orthoacetate, which is a methyl group.

従って原料事情から得られるピラゾール誘導体のR“は
水素原子または低級アルキル基に限定されている。
Therefore, R'' in the pyrazole derivatives obtained due to raw material circumstances is limited to a hydrogen atom or a lower alkyl group.

上記反ろ式(2)、 (3)においては、原料のの合成
は両者とも二硫化炭素を利用することにより作られる化
合物であり、またこれらを用いた場合必然的にピラゾー
ル環の3位は硫黄原子を介した置換基となる合成法であ
る。
In the above formulas (2) and (3), both of the raw materials are compounds made by using carbon disulfide, and when these are used, the 3-position of the pyrazole ring is inevitably This is a synthetic method in which a substituent is formed via a sulfur atom.

上記反応式(4)、 (5)においては原料のにより作
られる化合物であり、−Cat、基は脱離基としてうま
く利用されているうヒドラジンによる環化で−ON基と
反応すれば必然的に−NH,JJiが、  Co、 C
!、 H,基と反応すれば一〇H基が出る反応であり、
これらの場合もピラゾール環の5位は−Nも基または一
〇H基VC@られる合成法であることがわかる。
In the above reaction formulas (4) and (5), the -Cat group is a compound made from the starting material, and if it reacts with the -ON group during cyclization with hydrazine, which is successfully used as a leaving group, -NH, JJi, Co, C
! , H, is a reaction in which a 10H group is produced,
It can be seen that in these cases, the synthesis method is such that the 5th position of the pyrazole ring is also a -N group or a 10H group VC@.

上記反応式(6)においては、上記反応式(2)、 (
3)と同様に硫黄化合物を脱離基とした反応であり上記
に限定される合成法である。
In the above reaction formula (6), the above reaction formula (2), (
Similar to 3), this is a reaction using a sulfur compound as a leaving group, and the synthesis method is limited to the above.

発明が解決しようとする問題点 本発明の目的は一般式(1)で表される新規なアミノピ
ラゾールを提供すること、およびその為の簡便で収率の
よい合成法を見出すことにある。
Problems to be Solved by the Invention The purpose of the present invention is to provide a novel aminopyrazole represented by the general formula (1), and to find a simple and high-yielding synthetic method for the same.

本発明化合物は文献未記載の新規化合物であり、また従
来の技術を参考にして合成することも困難なことから、
従来の技術によらない新しい合成法の開発が必要になっ
た。
The compound of the present invention is a new compound that has not been described in any literature, and it is also difficult to synthesize it using conventional techniques.
It became necessary to develop a new synthetic method that does not rely on conventional techniques.

問題裁を解決する為の手段及び発明の態様本発明者らは
一般式(II) 〔式中R“、R“は前記と同じ意味を示す。〕で表され
るケテンジチオアセタール誘導体と。
Means for Solving the Problems and Aspects of the Invention The present inventors have prepared a compound of general formula (II) [wherein R" and R" have the same meanings as above. ] with a ketene dithioacetal derivative.

次式 (Iff) : R” OM     ([) 〔式中R”、Mは前記と同じ意味を示す。〕で表される
アルコラードを反応させ。
The following formula (Iff): R'' OM ([) [In the formula, R'' and M have the same meanings as above. ] React the alcoholado represented by.

次式 (■): R’ NHNも  (IV) 〔式中R°は前記と同じ意味を示す。]で表される1ニ
ドラジン誘導体と反応させることにより前記一般式(1
)で表される本発明化合物の得られることを見出した。
The following formula (■): R' NHN also (IV) [In the formula, R° has the same meaning as above. ] By reacting with the 1 nidrazine derivative represented by the general formula (1
) was found to be able to obtain the compound of the present invention represented by:

ここで前記一般式(1)で表される化合物は新規化合物
であり、ま九本化合物を用いることに!ッテ!願昭59
−159177号明la#iC記載の除草剤が高収率で
しかも高品質に得られることを見出し本発明を完成した
Here, the compound represented by the above general formula (1) is a new compound, and we decided to use the Kumoto compound! Tte! Gansho 59
The present invention was completed by discovering that the herbicide described in No.-159177 Akira #iC can be obtained in high yield and in high quality.

一般式(ff)と(厘)を反応させるには1反応溶媒と
してはメタノール、エタノール等のアルコール誘導体、
エーテル、テトラヒドロフラン等のエーテル誘4体、ベ
ンゼン、トルエン等の芳香族誘導体等が用いられる。式
(+1)と([1)のモル比としては約1:1〜1:3
のモル比、望ましくは約1:20モル比で行われる。反
応温度は一り0℃〜80Cの温度で行われるが通常室温
以下で進行する。Mはナトリウム、カリウム等のアルカ
リ金属原子を示すが通常す) IJウムが用いられる。
To react general formula (ff) and (rin), alcohol derivatives such as methanol and ethanol are used as reaction solvents,
Ether, ether derivatives such as tetrahydrofuran, aromatic derivatives such as benzene and toluene, etc. are used. The molar ratio of formula (+1) and ([1) is approximately 1:1 to 1:3
preferably in a molar ratio of about 1:20. The reaction temperature is typically 0°C to 80°C, but it usually proceeds below room temperature. M represents an alkali metal atom such as sodium, potassium, etc. (usually) IJum is used.

次にヒドラジン誘導体(IV)との反応は反応温度−2
0℃〜80℃で行われるが9通常室温以下で進行する。
Next, the reaction with hydrazine derivative (IV) is carried out at a reaction temperature of −2
It is carried out at 0°C to 80°C, but usually proceeds at room temperature or below.

反応溶媒は前記の溶媒をそのまま用いることができるが
、酸触媒として酢酸、ギ酸、プロピオン酸等の有機酸誘
導体を添加すると反応収率の向上に効果があるので1通
常上記の酢酸等を添加して反応を行うことが好ましい。
As the reaction solvent, the above-mentioned solvents can be used as they are, but the addition of an organic acid derivative such as acetic acid, formic acid, propionic acid, etc. as an acid catalyst is effective in improving the reaction yield. It is preferable to carry out the reaction.

反応後溶媒を留去し、水を加え有機溶媒で抽出すること
より目的物を取り出すことができる。
After the reaction, the solvent is distilled off, water is added, and the target product can be extracted by extraction with an organic solvent.

なお上記式(「)と(III)の反応により中間体とし
て 〔R′、R“は前記と同じ意味を示す。〕が生成してい
ると推測されるが2本中間体は取り出すことなく、っぎ
のヒドラジン誘導体CW>と反応させることができる。
Incidentally, the reaction between the above formulas ('') and (III) produces an intermediate [R' and R'' have the same meanings as above. ] is presumed to be produced, but the two intermediates can be reacted with the hydrazine derivative CW> without taking them out.

使用され°るヒドラジン誘導体<W>とじては、たとえ
ばメチルヒドラジン、エチルヒドラジ7、  n−グロ
ビルヒドラジン、1−プロピルヒドラジン、n−ブチル
ヒドラジ7、  t−ブチルヒドラジン等を用いること
ができる。
Examples of the hydrazine derivative <W> that can be used include methylhydrazine, ethylhydrazine, n-globylhydrazine, 1-propylhydrazine, n-butylhydrazine, and t-butylhydrazine.

アルコラ−)(III)としては、たとえばメチルアル
コラード、エチルアルコラード、n−プロピルアルコラ
ード、1−プロピルアルコラード、n−ブチルアルコラ
ード等を用いることができる。
As alcohol) (III), for example, methyl alcoholade, ethyl alcoholade, n-propyl alcoholade, 1-propyl alcoholade, n-butyl alcoholade, etc. can be used.

ケテンジチオアセタール誘導体(II)はシアン酢酸エ
ステル、二硫化炭素、2倍モルのアルキル化剤及び塩基
より合成されるが、シアン酢酸エステルトシてはメチル
エステル、エチルエステル。
The ketene dithioacetal derivative (II) is synthesized from cyanacetate, carbon disulfide, twice the molar amount of an alkylating agent, and a base, and cyanacetate is methyl ester and ethyl ester.

n−プロピルエステル、x−プロピルエステル。n-propyl ester, x-propyl ester.

n−ブチルエステル等、アルキル化剤としては沃化メチ
ル、沃化エチル、ジメチル硫酸、ジエチル硫酸等が用い
られる。
Examples of alkylating agents such as n-butyl ester include methyl iodide, ethyl iodide, dimethyl sulfate, diethyl sulfate, and the like.

発明の効果 (1)  医農薬中間体として有用な新規アミノピラゾ
ール誘導体(1)が得られる。
Effects of the Invention (1) A novel aminopyrazole derivative (1) useful as a pharmaceutical and agricultural intermediate is obtained.

(2)本発明化合物(1)?用いることにより容易にピ
ラゾールスルホンアミド誘導体(V)に誘導することが
できる。
(2) Compound (1) of the present invention? By using this, the pyrazole sulfonamide derivative (V) can be easily derived.

(3)容易に合成できるケチ7ジチオアセタール誘導体
(II)より簡便に収率よく合成することができる。
(3) It can be synthesized more easily and with higher yield than the easily synthesized stingy-7 dithioacetal derivative (II).

実施例15−アミノ−3−メトキク−1−メチルピラゾ
ール−4−カルボン酸エチルの製造(酢11!を加えた
場合) メタノール400dKλ2−ビス−メチルチオ−1−7
7ノアクリル酸工チル20vft溶%後、ナトリウムメ
チラート11.4ff含むメタノール溶i11!100
rItを室温で加え10分間攪拌した。次に酢酸40.
g6加えた後、メチルヒドラジン4.4?を加え、室温
にて6時間攪拌した。
Example 1 Production of ethyl amino-3-methoxy-1-methylpyrazole-4-carboxylate (with addition of vinegar 11!) Methanol 400 dKλ2-bis-methylthio-1-7
After dissolving 20vft of 7-noacrylic acid, dissolving in methanol containing 11.4ff of sodium methylate, i11!100
rIt was added at room temperature and stirred for 10 minutes. Next, acetic acid 40.
After adding g6, methylhydrazine 4.4? was added and stirred at room temperature for 6 hours.

減圧下メタノールを留去し死後、水ヲ加え、クロロホル
ム100−にて抽出操作t−2回行なった。クロロホル
ム層を水洗後無水硫酸ナトリウムで乾燥、溶媒留去して
目的物11.5 fを得た。
Methanol was distilled off under reduced pressure, and after death, water was added and extraction was performed t-2 times with 100% chloroform. The chloroform layer was washed with water, dried over anhydrous sodium sulfate, and the solvent was distilled off to obtain the desired product 11.5f.

1点 140〜141℃ 収率63X 実施例2 5−アミノ−3−メトキシ−1−メチルピラ
ゾール−4−カルボン酸エチルの製造(酢酸を加えない
場合) メタノール400dに2,2−ビス−メチ、チオ−1−
シアノアクリル酸エチル2り2とナトリウムメチラー)
1t4fi上記実施例1に準じて混合し9次にメチルヒ
ドラジ744f’lj(加えた後室温にて6時間攪拌し
丸。上記実施例1に準じて後処理を行ない、目的物五2
ffe得た。
1 point 140-141°C Yield 63X Example 2 Production of ethyl 5-amino-3-methoxy-1-methylpyrazole-4-carboxylate (when acetic acid is not added) 2,2-bis-methy, Thio-1-
ethyl cyanoacrylate 2 and sodium methyl)
1t4fi Mixed according to Example 1 above, then added 744f'lj of methyl hydrazide (added and stirred at room temperature for 6 hours. Post-processed according to Example 1 above, and obtained the desired product 52.
I got ffe.

収率17X 6考例 4−エトキシカルボニル−3−メトキシ−1−
メチルピラゾール−5−スルホンアミドの製造法 1)5−り*a−3ミー3−メトキシ−1−メチルピラ
ゾールカルボン酸エチルの製造5−アミノ−3−メトキ
シ−1−メチルピラゾール−4−カルボン酸エチルa1
 tf55X塩i1!10(ldに溶かし、0℃に冷却
した。次に純度97Xの唾硝酸ナトリウム五7tf水B
、1に溶かし、温度を5℃以下に保ちながら加えた。
Yield 17X 6 Example 4-ethoxycarbonyl-3-methoxy-1-
Production method of methylpyrazole-5-sulfonamide 1) Production of ethyl 5-ri*a-3-methoxy-1-methylpyrazolecarboxylate 5-amino-3-methoxy-1-methylpyrazole-4-carboxylic acid ethyl a1
TF 55
, 1 and added while keeping the temperature below 5°C.

10分間10℃にて攪拌後尿素1?を加え、更に10分
間攪拌した。この溶液を四塩化炭素50ゴに亜硫酸五6
fを吸収させた溶液に5℃にて滴下した。望素ガスの発
生がなくなるまで室温で攪拌した後、水100di加え
有機層全分離した。水層にクロロホルム50ゴを加え抽
出操作を行なった後、有機層を前の有機層と合わせ、水
洗後無水硫酸ナトリウムで脱水し、溶媒留去して油状物
を得た。これにn−ヘキサン10dl−加えて攪拌する
と目的物の結晶が析出したので戸数した。収量7.1 
? 融点6Qへ61C収率13ON 11)5−メトキシ−1−メチル−5−メルカプトピラ
ゾール−4−カルボ/酸エチルの!2!造 ジメチルホルムアミド20IIltに純度70%の水硫
化ナトリウム5.61を懸濁させ、5−クロer−3−
メトキシー1−メチルピラゾール−4−カルボ/酸エチ
ル6.1fを加え、80〜85℃にて1.5時間攪拌し
た・冷却後・水60“′を加え、55X塩酸にて酸沈し
た。結晶全声域し乾燥させて目的物5.1fi得た。
After stirring for 10 minutes at 10°C, urea 1? was added and further stirred for 10 minutes. Add this solution to 50 g of carbon tetrachloride and 56 g of sulfite.
It was added dropwise at 5°C to the solution in which f had been absorbed. After stirring at room temperature until no more desired gas was generated, 100 di of water was added and the organic layer was completely separated. After 50 g of chloroform was added to the aqueous layer for extraction, the organic layer was combined with the previous organic layer, washed with water, dried over anhydrous sodium sulfate, and the solvent was distilled off to obtain an oil. When 10 dl of n-hexane was added to this and stirred, crystals of the target substance were precipitated, so the mixture was mixed. Yield 7.1
? Melting point 6Q to 61C yield 13ON 11) of 5-methoxy-1-methyl-5-mercaptopyrazole-4-carbo/ethyl acid! 2! 5.61% of sodium bisulfide with a purity of 70% was suspended in 20IIlt of dimethylformamide, and 5-chloroer-3-
6.1f of methoxy-1-methylpyrazole-4-carbo/ethyl acid was added and stirred at 80-85°C for 1.5 hours. After cooling, 60"' of water was added and the crystals were precipitated with 55X hydrochloric acid. The target 5.1fi was obtained by listening to the entire vocal range and drying it.

Ja 74 へ75℃  収率 85Niii)4−エ
トキシカルボニル−3−メトキシ−1−メチルピラゾー
ル−5−スルホンアミドの製造 酢@9−に5−メトキシ−1−メチル−5−メルカブト
ビラゾール−4−カルボ/酸エチルIPi溶かし、水1
d1ft加え、5℃に冷却した。
Ja 74 to 75°C Yield 85Niii) Production of 4-ethoxycarbonyl-3-methoxy-1-methylpyrazole-5-sulfonamide 5-methoxy-1-methyl-5-mercabutovirazole-4 in vinegar @9- -Carbo/ethyl acid IPi dissolved in water 1
d1ft was added and cooled to 5°C.

反応温度を10℃以下に保ちながら塩素をα5分間通じ
た。氷水5axt加えた後ベンゼン50ゴで抽出操作を
行な−)た。有機層を分離し、水洗後無水硫酸ナト17
クムで乾燥し、溶媒留去して粗製の4−エトキクカルボ
ニル−5−メトキシ−1−メチルヒラソール−5−スル
ホニルクaリド1.1fi得た。これを1.2−ジクロ
ロエタ/2Q−に溶かし、炭酸ア/モニ”ム(NH。
Chlorine was passed for α5 minutes while keeping the reaction temperature below 10°C. After adding 5 tons of ice water, extraction was performed with 50 tons of benzene. Separate the organic layer, wash with water, and add anhydrous sodium sulfate 17
The residue was dried over cum and the solvent was distilled off to obtain 1.1fi of crude 4-ethoxycarbonyl-5-methoxy-1-methylhyrasol-5-sulfonyl chloride. This was dissolved in 1,2-dichloroethane/2Q- and ammonium carbonate (NH).

として30X含有)α5sr2加え、室温にて4時間攪
拌した。無機塩を戸別した後、溶媒留去して目的物19
1金得た。
α5sr2 (containing 30X) was added thereto, and the mixture was stirred at room temperature for 4 hours. After removing the inorganic salt from each house, the solvent is distilled off to obtain the target product 19.
I got 1 gold.

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、R^2、R^3はそれぞれ独立に低級ア
ルキル基を示す。〕 で表されるアミノピラゾール誘導体。
(1) General formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [In the formula, R^1, R^2, and R^3 each independently represent a lower alkyl group. ] An aminopyrazole derivative represented by
(2)一般式(II): ▲数式、化学式、表等があります▼(II) 〔式中R^3は低級アルキル基を、R^4は低級アルキ
ル基またはベンジル基を示す。〕 で表されるケテンジチオアセタール誘導体と次式(III
): R^2OM(III) 〔式中R^2は低級アルキル基、Mはアルカリ金属原子
を示す。〕 で表されるアルコラートとを反応させ、次いで次式(I
V) R^1NHNH_2(IV) 〔式中R^1は低級アルキル基を示す。〕 で表されるヒドラジン誘導体と反応させることを特徴と
する一般式( I ): ▲数式、化学式、表等があります▼( I ) 〔式中R^1、R^2、R^3はそれぞれ独立に低級ア
ルキル基を示す。〕 で表されるアミノピラゾール誘導体の製法。
(2) General formula (II): ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (II) [In the formula, R^3 represents a lower alkyl group, and R^4 represents a lower alkyl group or a benzyl group. ] Ketenedithioacetal derivative represented by and the following formula (III
): R^2OM(III) [In the formula, R^2 represents a lower alkyl group, and M represents an alkali metal atom. ] and then reacted with the alcoholate represented by the following formula (I
V) R^1NHNH_2(IV) [In the formula, R^1 represents a lower alkyl group. ] General formula (I) characterized by reacting with a hydrazine derivative represented by: ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) It independently represents a lower alkyl group. ] A method for producing an aminopyrazole derivative represented by
JP14367185A 1985-06-28 1985-06-28 Aminopyrazole derivative and production thereof Granted JPS624274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14367185A JPS624274A (en) 1985-06-28 1985-06-28 Aminopyrazole derivative and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14367185A JPS624274A (en) 1985-06-28 1985-06-28 Aminopyrazole derivative and production thereof

Publications (2)

Publication Number Publication Date
JPS624274A true JPS624274A (en) 1987-01-10
JPH0569106B2 JPH0569106B2 (en) 1993-09-30

Family

ID=15344228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14367185A Granted JPS624274A (en) 1985-06-28 1985-06-28 Aminopyrazole derivative and production thereof

Country Status (1)

Country Link
JP (1) JPS624274A (en)

Also Published As

Publication number Publication date
JPH0569106B2 (en) 1993-09-30

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