JPH013166A - Method for producing thiols - Google Patents
Method for producing thiolsInfo
- Publication number
- JPH013166A JPH013166A JP62-157501A JP15750187A JPH013166A JP H013166 A JPH013166 A JP H013166A JP 15750187 A JP15750187 A JP 15750187A JP H013166 A JPH013166 A JP H013166A
- Authority
- JP
- Japan
- Prior art keywords
- carbon atoms
- alkyl group
- general formula
- formula
- represented
- Prior art date
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は医薬品の製造に有用なチオール類の製造方法に
関する。詳しくは、2.2−2置換チアゾリジンと、ニ
トロエテン誘導体と反応させ、チオール類を製造する方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing thiols useful for producing pharmaceuticals. Specifically, the present invention relates to a method for producing thiols by reacting a 2.2-2-substituted thiazolidine with a nitroethene derivative.
本発明によるチオール類は
一般式(TV)
R1・・・(IV )
〔式中、RおよびR2は水素または炭素数1〜4のアル
キル基、R3は炭素数1〜4のアルキル基、ALKは炭
素数1〜4のアルキル基を示す。〕で示される医薬品の
中間体として有用な化合物である。The thiols according to the present invention have the general formula (TV) R1...(IV) [wherein R and R2 are hydrogen or an alkyl group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and ALK is It represents an alkyl group having 1 to 4 carbon atoms. ] is a compound useful as an intermediate for pharmaceuticals.
(従来の技術) 一般式(I) H8CH2C■12NHCNHR3 II (DI ) HN02 〔式中、R3は炭素数1〜4のアルキル基を示す。(Conventional technology) General formula (I) H8CH2C■12NHCNHR3 II (DI) HN02 [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms.
〕
で示されるチオール類の製造方法は、当業界において公
知である。] The method for producing thiols represented by these is known in the art.
たとえば、特公昭60−58236号明細書には、一般
式(V)
一般式(Vl)
R3Nl−I2−(Vl )
〔式中、R3は炭素数1〜4のアルキル基を示す。For example, in Japanese Patent Publication No. 60-58236, general formula (V) general formula (Vl) R3Nl-I2-(Vl) [wherein R3 represents an alkyl group having 1 to 4 carbon atoms].
〕
で示されるアミンと反応させることにより製造する方法
か開示されている。] A method for producing by reacting with an amine represented by the following is disclosed.
しかしながら、この方法では2−ニトロメチレンチアゾ
リジンを得るには複雑な工程を必要とする等の問題があ
る。However, this method has problems such as requiring complicated steps to obtain 2-nitromethylenethiazolidine.
(発明が解決しようとする問題点)
= 5 −
本発明者等は、このような観点から、鋭意研究した結果
、
一般式(I>
〔式中、R1は 炭素数1〜4のアルキル基、R2は炭
素数1〜4のアルキル基またはアセテート基を示す。〕
で示される2、2−2置換チアゾリジンと、一般式(n
)
3NH
\
C=CHNO2・・・(I[)
/
〔式中、R3は炭素数1〜4のアルキル基、Pは離脱基
を示す。〕
で示されるニトロエテン誘導体との反応生成物に塩酸を
反応させことにより、
一般式(III)
HS CH2CH2’ N HCN HR3]
1 ・・・(In)
11NO2
〔式中、R3は炭素数1〜4のアルキル基を示す。(Problems to be Solved by the Invention) = 5 - As a result of intensive research from this viewpoint, the present inventors found that the general formula (I> [wherein, R1 is an alkyl group having 1 to 4 carbon atoms, R2 represents an alkyl group having 1 to 4 carbon atoms or an acetate group.] A 2,2-2-substituted thiazolidine represented by the formula (n
) 3NH \ C=CHNO2...(I[) / [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms, and P represents a leaving group. ] By reacting the reaction product with the nitroethene derivative represented by the general formula (III) with hydrochloric acid, HS CH2CH2' N HCN HR3]
1...(In) 11NO2 [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms.
〕 で示されるチオール類を直接製造することに成功しな。] We have succeeded in directly producing the thiols shown in
(問題を解決するための手段)
本発明は、
一般式(I)
〔式中、R1は 炭素数1〜4のアルキル基、R2は炭
素数1〜4のアルキル基またはアセテート基を示す。〕
で示される2、2−2置換チアゾリジンと、一般式(I
I)
3NH
\
C−CuSO4・・・(II)
/
〔式中、R3は炭素数1〜4のアルキル基、Pは離脱基
を示す。〕
で示されるニトロエテン誘導体との反応生成物に塩酸を
反応させ、
一般式(I)
HS CHCHN HCN HR3
11・・・ (II[)
11N02
〔式中、R3は炭素数1〜4のアルキル基を示す。(Means for Solving the Problems) The present invention is based on the general formula (I) [wherein R1 represents an alkyl group having 1 to 4 carbon atoms, and R2 represents an alkyl group having 1 to 4 carbon atoms or an acetate group]. ] A 2,2-2-substituted thiazolidine represented by the general formula (I
I) 3NH \ C-CuSO4...(II) / [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms, and P represents a leaving group. ] Hydrochloric acid is reacted with the reaction product with the nitroethene derivative represented by the formula (I) HS CHCHN HCN HR3 11... (II[) 11N02 [wherein, R3 is an alkyl group having 1 to 4 carbon atoms] show.
〕
で示されるチオール類を製造する新規な方法を提1共す
るものである。] We present a novel method for producing the thiols shown below.
本発明の反応は次式により示される。The reaction of the present invention is represented by the following formula.
F丁
RNH−C=CHNO2
< vn >
RNH−C=CHNO2
(Vn )
HS CHCHN J(CN HR3→
11HNO2
(II[)
本発明の方法は一般式(I)で示される2、2−2置換
チアゾリジンを出発原料とし、中間体(■)を単離する
ことなく、実質−工程で一般式(I[[)で示されるチ
オール類を製造する新規な方法を提供するものである。F Ding RNH-C=CHNO2 <vn> RNH-C=CHNO2 (Vn) HS CHCHN J(CN HR3→
11HNO2 (II[) The method of the present invention uses a 2,2-2-substituted thiazolidine represented by the general formula (I) as a starting material, and converts the general formula (I) in a substantial step without isolating the intermediate (■). A novel method for producing thiols represented by [[] is provided.
本発明に使用する一般式(I>
〔式中、R1は 炭素数1〜4のアルキル基、R2は炭
素数1〜4のアルキル基またはアセテート基を示す。〕
で示される2、2−2置換チアゾリジンは2−アミノエ
チルアルコール酸性硫酸エステルまたはエチレンイミン
より容易に合成できる。2, 2-2 represented by the general formula (I> [wherein, R1 represents an alkyl group having 1 to 4 carbon atoms, and R2 represents an acetate group or an acetate group having 1 to 4 carbon atoms] used in the present invention Substituted thiazolidines can be easily synthesized from 2-aminoethyl alcohol acidic sulfate or ethyleneimine.
2.2−22換チアゾリジンはチオエーテル結合を有し
ているため安定な化合物である。2.2-22 Substituted thiazolidine is a stable compound because it has a thioether bond.
本発明に使用する2、2−2置換チアゾリジンとしては
、2.2−ジメチルチアゾリジン、2−メチル−2−エ
チルチアゾリジン等が挙げられる。Examples of the 2,2-2-substituted thiazolidine used in the present invention include 2,2-dimethylthiazolidine and 2-methyl-2-ethylthiazolidine.
本発明に使用する
一般式(II)
3NH
\
C=CHNO2(n)
/
〔式中、R3は炭素数1〜4のアルキル基、Pは離脱基
を示す。〕
で示されるニトロエテン誘導体としては1−メチルアミ
ノ1−メチルチオ−2ニトロエテンが挙げられる。General formula (II) used in the present invention: 3NH\C=CHNO2(n)/ [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms, and P represents a leaving group. ] Examples of the nitroethene derivative represented by these include 1-methylamino 1-methylthio-2nitroethene.
本発明の実施方法としては、一般式(I)で示される2
、2’−2置換チアゾリジンと一般式(IT)で示され
るニトロエテン誘導体とを溶媒中で、好ましくは水また
は低級アルコールまたはこれらの混合物中で反応させる
。As a method of carrying out the present invention, 2 represented by general formula (I)
, 2'-2-substituted thiazolidine and a nitroethene derivative represented by general formula (IT) are reacted in a solvent, preferably water, a lower alcohol, or a mixture thereof.
溶媒の使用量は、原料の一般式(I)で示される2、2
−2置換チアゾリジンに対して、2〜20倍重量、好ま
しくは3〜10倍重景の範囲である。The amount of solvent used is 2, 2 as shown in the general formula (I) of the raw material.
It is in the range of 2 to 20 times heavier, preferably 3 to 10 times heavier than the -2-substituted thiazolidine.
一般式(I)で示される2、2−2置換チアゾリジンの
使用量は、原料の一般式(n)で示されるニトロエテン
誘導体に対して、化学当量で行なえるが、0.5〜3倍
モル、好ましくは1〜2倍モルの範囲である。過剰に原
料の一般式(I)で示される2、2−21換チアゾリジ
ン使用した場合は、蒸留回収して再使用できる。The amount of the 2,2-2-substituted thiazolidine represented by the general formula (I) can be used in a chemical equivalent amount of the nitroethene derivative represented by the general formula (n) as a raw material, but it may be 0.5 to 3 times the molar amount. , preferably in the range of 1 to 2 times the mole. If an excess of the 2,2-21-substituted thiazolidine represented by general formula (I) is used as a raw material, it can be recovered by distillation and reused.
反応温度は、室温から200°Cまで使用できるか、好
ましくは還流温度の範囲である。Reaction temperatures can range from room temperature to 200°C, preferably in the range of reflux temperature.
反応時間は、実質的に反応か終了するまでであり、反応
温度に応じて変えるか、通常1〜12時間の範囲である
。The reaction time is until the reaction is substantially completed, and varies depending on the reaction temperature, and is usually in the range of 1 to 12 hours.
つぎに、上記の反応液中へ塩酸を加え反応させる。塩酸
の量は、一般式(1)で示される2、2−2置換デアシ
リジンの3倍モル以上、好ましくは5倍モル以上である
。Next, hydrochloric acid is added to the above reaction solution to cause a reaction. The amount of hydrochloric acid is 3 times or more, preferably 5 times or more by mole, of the 2,2-2-substituted deacylidine represented by general formula (1).
反応温度は室温から200℃であり、好ましくは還流温
度の範囲である。The reaction temperature ranges from room temperature to 200°C, preferably within the reflux temperature range.
反応時間は実質的の反応が終了するまでであり反応温度
に応じて変えるか通常1〜12時間である。The reaction time is until the substantial reaction is completed, and is usually 1 to 12 hours depending on the reaction temperature.
(作 用) 本発明により、 一般式(II[) H8CH2CH2NHCNHR3 II (I ) CF■ N O2 〔式中、R3は炭素数1〜4のアルキル基を示す。(for production) According to the present invention, General formula (II[) H8CH2CH2NHCNHR3 II (I) CF ■ N O2 [In the formula, R3 represents an alkyl group having 1 to 4 carbon atoms.
〕
で示されるチオール類は安価に製造できしかも一般式(
IV )
= 14−
R1(IV)
〔式中、RおよびR2は水素または炭素数1〜4のアル
キル基、R3は炭素数1〜4のアルキル基、ALKは炭
素数1〜4のアルキル基を示す。〕で示される医薬品の
中間体として有用な化合物でである。] Thiols represented by the formula (
IV) = 14-R1(IV) [In the formula, R and R2 are hydrogen or an alkyl group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and ALK is an alkyl group having 1 to 4 carbon atoms. show. ] is a compound useful as an intermediate for pharmaceuticals.
(実 施 例)
以下、実施例を挙げてさらに具体的に説明するか、これ
らの実施例は例示であり、本発明はこれらに限定される
ものではない。(Examples) Hereinafter, the present invention will be described in more detail with reference to Examples, but these Examples are merely illustrative and the present invention is not limited thereto.
一般式<I)
15−一
〔式中、R1は 炭素数1〜4のアルキル基、R2は炭
素数1〜4のアルキル基またはアセテート基を示す。〕
で示される2、2−2置換デアシリジンの合成例製造例
A−1
2〜メチル2−エチルチアゾリジンの製造水酸化す1〜
リウム12、Ogを水20m1に溶解し、2−アミノエ
チレアルコール硫酸エステル42.4gを加える。さら
に水硫化す1ヘリウム(含有率70%)48.0gとメ
チルエチルケトン200+nlを加えて、オー1〜クレ
ープ中、90℃で3時間反応さぜな。General formula <I) 15-1 [In the formula, R1 represents an alkyl group having 1 to 4 carbon atoms, and R2 represents an alkyl group having 1 to 4 carbon atoms or an acetate group. ] Synthesis example of 2,2-2-substituted deacylidine shown by Production example A-1 Production of 2-methyl 2-ethylthiazolidine Hydroxylation step 1-
Lium 12, Og is dissolved in 20 ml of water, and 42.4 g of 2-aminoethyleal alcohol sulfate is added. Furthermore, 48.0 g of helium hydrogen sulfide (content: 70%) and 200+ nl of methyl ethyl ketone were added, and the mixture was reacted at 90° C. for 3 hours in a crepe.
反応終了後、室温まで冷却し、沈澱物を沢刑しな。After the reaction is complete, cool to room temperature and drain the precipitate.
温液をメチルエチルケトン層と水層に分液し、水層をメ
チルエチルケトン30m1で2回洗浄する。The hot liquid is separated into a methyl ethyl ketone layer and an aqueous layer, and the aqueous layer is washed twice with 30 ml of methyl ethyl ketone.
メチルエチルケトン層を合せて濃縮した。残渣を減圧蒸
留し、沸点72.1°C(10mml(g>で2−メチ
ル2−エチルチアゾリジン33.3g(収率84.7%
)を得た。得られた2−エチルチアゾリジンの沸点およ
びIRスペクI〜ルは共に標準品の2−エチルチアゾリ
ジンと一致しな。The methyl ethyl ketone layers were combined and concentrated. The residue was distilled under reduced pressure to give 33.3 g of 2-methyl 2-ethylthiazolidine (yield 84.7%) with a boiling point of 72.1°C (10 mml (g)).
) was obtained. The boiling point and IR spectra of the obtained 2-ethylthiazolidine do not match those of the standard 2-ethylthiazolidine.
製造例 A−2
2,2−ジメチルチアゾリジンの製造
水酸化すI・リウム1.2.0gを水20m1に溶解し
、2−アミノエチルアルコール酸性硫酸エステル42.
4.gを加えた。さらに水硫化ナトリウム(含有率70
%)4.8.0gとアセトン200 mlを加えて、オ
ー)へクレープ中、75°Cで3時間反応さぜな。Production Example A-2 Production of 2,2-dimethylthiazolidine 1.2.0 g of lithium hydroxide was dissolved in 20 ml of water, and 42.0 g of 2-aminoethyl alcohol acidic sulfuric ester was dissolved.
4. g was added. In addition, sodium hydrosulfide (content rate 70
%) and 200 ml of acetone and react in a crepe at 75°C for 3 hours.
反応終了後、室温まで冷却し、沈澱物を2戸別し、炉液
を濃縮した。残渣を減圧蒸留し、沸点59゜3℃(1,
4、5m m Hg )で2.2−ジメチルチアゾリジ
ン30.2g(収率86.0%)を得な。After the reaction was completed, the reactor was cooled to room temperature, the precipitate was separated into two, and the furnace liquid was concentrated. The residue was distilled under reduced pressure to a boiling point of 59°3°C (1,
4,5 mm Hg) to obtain 30.2 g (yield 86.0%) of 2,2-dimethylthiazolidine.
得られた2、2−ジメチルチアゾリジンの沸点およびJ
Rスペクトルは共に標準品の2,2−ジメチルチアゾリ
ジンと一致した。The boiling point and J of the obtained 2,2-dimethylthiazolidine
Both R spectra matched that of the standard product 2,2-dimethylthiazolidine.
実施例 1
2−2ジメチルチアゾリジン12.0gと1−メチルア
ミノ1−メチルチ第2−二1へロエテン14.9gを水
30m1およびエタノール100 mlの混合溶媒に入
れ2時間還流加熱後、濃塩酸(36重量%)1.OOg
を加え、5時間還流下て反応さぜな。ついで反応液を蒸
発乾固させた。残渣を水に懸濁させ過剰の炭酸すl・リ
ウムを加え、中和後、と過した。枦残を乾燥させること
により7l−(2−メルカプトエチル)N−−メチル−
2−ニトロ1−1−一エテンジアミン14.4gを得な
。N−(2−メルカプ1〜エチル)N″−メチル−2−
二トロ1−1−−エテンジアミンの収率は81゜5%で
あった。Example 1 12.0 g of 2-2-dimethylthiazolidine and 14.9 g of 1-methylamino-1-methylthi-2-2-2-1-heroethene were placed in a mixed solvent of 30 ml of water and 100 ml of ethanol, heated under reflux for 2 hours, and then mixed with concentrated hydrochloric acid ( 36% by weight)1. OOg
Add and react under reflux for 5 hours. The reaction solution was then evaporated to dryness. The residue was suspended in water, and an excess of sulfur and lithium carbonate was added to neutralize it, followed by filtration. By drying the residue, 7l-(2-mercaptoethyl)N--methyl-
Obtain 14.4 g of 2-nitro 1-1-ethenediamine. N-(2-mercap1-ethyl)N″-methyl-2-
The yield of nitro-1-1-ethenediamine was 81.5%.
実施例 2
2−メチル2−エチルチアゾリジン13.5gと1−メ
チルアミノ1−メチルチ第2−二トロエテン14.9g
を水30m1およびエタノール1001+11の混合溶
媒に入れ2時間還流加熱後、濃塩酸(36重量%)10
0gを加え、5時間還流下で反応させた。ついで反応液
を蒸発乾固さぜな、残渣を水に懸濁させ、過剰の炭酸ナ
トリウムを加え、中和後、濾過した。枦残を乾燥させる
ことにより・、N−(2−メルカプトエチル)N−−メ
チル−2−二トロ1−1−一エテンジアミン14.2g
を得な。N−(2−メルカプトエチル)N−−メチル−
2−二トロ1−1−一エテンジアミンの収率は80.0
%であった。Example 2 13.5 g of 2-methyl 2-ethylthiazolidine and 14.9 g of 1-methylamino 1-methylthi-2-ditroethene
was added to a mixed solvent of 30 ml of water and ethanol 1001+11, heated under reflux for 2 hours, and concentrated hydrochloric acid (36% by weight) 10
0 g was added, and the reaction was carried out under reflux for 5 hours. The reaction solution was then evaporated to dryness, the residue was suspended in water, and after neutralization by adding an excess of sodium carbonate, it was filtered. By drying the residue, 14.2 g of N-(2-mercaptoethyl)N--methyl-2-nitro-1-1-ethenediamine was obtained.
Don't get it. N-(2-mercaptoethyl)N--methyl-
The yield of 2-nitro-1-1-ethenediamine is 80.0
%Met.
(発明の効果) 本発明により、 一般式(III) −19〜 H8CH2CH2NHcNHR3 +I (III ) CHN O2 〔式中、Rは炭素数1〜4のアルキル基を示す。(Effect of the invention) According to the present invention, General formula (III) -19~ H8CH2CH2NHcNHR3 +I (III) CHN O2 [In the formula, R represents an alkyl group having 1 to 4 carbon atoms.
〕
で示されるチオール類は反応工程が大巾に改善され通常
80%以上の収率で得られる。装置の操作性からの効果
として酸化防止ができるなどの操作性が大幅に改善され
る。] The thiols represented by the following are usually obtained in a yield of 80% or more due to a greatly improved reaction process. As a result of the operability of the device, oxidation can be prevented and the operability is greatly improved.
さらに、装置の建設が安価に製造できる。さらにまた、
本発明によるチオール類は、
一般′:A(■)
R1・・・(1v)
〔式中、R1およびR2は水素または炭素数1〜4のア
ルキル基、R3は炭素数1〜4のアルキル基、肘バは炭
素数1〜4のアルキル基を示す。〕で示される医薬品の
中間体として有用な化合物である。Additionally, the construction of the device is inexpensive to manufacture. Furthermore,
The thiols according to the present invention have the following structure: General': A (■) R1...(1v) [wherein R1 and R2 are hydrogen or an alkyl group having 1 to 4 carbon atoms, and R3 is an alkyl group having 1 to 4 carbon atoms] , ``elbow'' represents an alkyl group having 1 to 4 carbon atoms. ] is a compound useful as an intermediate for pharmaceuticals.
Claims (1)
炭素数1〜4のアルキル基またはアセテート基を示す。 〕 で示される2,2−2置換チアゾリジンと、一般式(I
I) ▲数式、化学式、表等があります▼・・・(II) 〔式中、R_3は炭素数1〜4のアルキル基、Pは離脱
基を示す。〕 で示されるニトロエテン誘導体との反応生成物に塩酸を
反応させることを特徴とする 一般式(III) ▲数式、化学式、表等があります▼・・・(III) 〔式中、R_3は炭素数1〜4のアルキル基を示す。〕 で示されるチオール類の製造方法。(1) General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼... (I) [In the formula, R_1 is an alkyl group with 1 to 4 carbon atoms, R_2 is an alkyl group with 1 to 4 carbon atoms, or Indicates an acetate group. ] 2,2-2-substituted thiazolidine represented by the general formula (I
I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(II) [In the formula, R_3 represents an alkyl group having 1 to 4 carbon atoms, and P represents a leaving group. ] General formula (III) characterized by reacting hydrochloric acid with the reaction product with a nitroethene derivative shown by ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(III) [In the formula, R_3 is the number of carbon atoms Indicates 1 to 4 alkyl groups. ] A method for producing thiols shown in the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-157501A JPH013166A (en) | 1987-06-26 | Method for producing thiols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-157501A JPH013166A (en) | 1987-06-26 | Method for producing thiols |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643166A JPS643166A (en) | 1989-01-06 |
| JPH013166A true JPH013166A (en) | 1989-01-06 |
Family
ID=
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