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JPH0440354B2 - - Google Patents
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JPH0440354B2 - - Google Patents

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Publication number
JPH0440354B2
JPH0440354B2 JP25189586A JP25189586A JPH0440354B2 JP H0440354 B2 JPH0440354 B2 JP H0440354B2 JP 25189586 A JP25189586 A JP 25189586A JP 25189586 A JP25189586 A JP 25189586A JP H0440354 B2 JPH0440354 B2 JP H0440354B2
Authority
JP
Japan
Prior art keywords
thienyl
ethylamine
reaction
thiopheneacetonitrile
mmol
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.)
Expired
Application number
JP25189586A
Other languages
Japanese (ja)
Other versions
JPS63107973A (en
Inventor
Takenaga Yamanochi
Hiroyuki Yamane
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry 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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP25189586A priority Critical patent/JPS63107973A/en
Publication of JPS63107973A publication Critical patent/JPS63107973A/en
Publication of JPH0440354B2 publication Critical patent/JPH0440354B2/ja
Granted legal-status Critical Current

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  • Heterocyclic Compounds Containing Sulfur Atoms (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、2−(2−チエニルエチル)アミン
の新規な製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a novel method for producing 2-(2-thienylethyl)amine.

本発明の目的は、化学工業および医薬工業にお
いて使用される多くの誘導体の合成中間体として
公知の化合物である2−(2−チエニルエチル)
アミンを、工業的に、かつ高収率で製造すること
にある。
The object of the present invention is the compound 2-(2-thienylethyl), which is known as a synthetic intermediate for many derivatives used in the chemical and pharmaceutical industry.
The objective is to produce amines industrially and in high yield.

(従来の技術) 2−(2−チエニルエチル)アミンは、すでに
種々の方法によつて合成されている。例えば、次
のような方法である。
(Prior Art) 2-(2-thienylethyl)amine has already been synthesized by various methods. For example, the following method is used.

(1) ジヤーナル・オブ・オーガニツク・ケミスト
リー(J.Org.Chem.)15、807(1950)に記載さ
れている方法は、2−(2−ニトロビニル)チ
オフエンを水素化リチウムアルミニウムで還元
することによつてなされる。
(1) The method described in Journal of Organic Chemistry (J.Org.Chem.) 15 , 807 (1950) involves reducing 2-(2-nitrovinyl)thiophene with lithium aluminum hydride. It is done by hand.

(2) ジヤーナル・オブ・オーガニツク・ケミスト
リー(J.Org.Chem.)15、81(1950)に記載さ
れている方法は、2−チオフエンアセトニトリ
ルを水素化リチウムアルミニウムで還元するこ
とによつてなされる。
(2) The method described in Journal of Organic Chemistry (J.Org.Chem.) 15 , 81 (1950) is carried out by reducing 2-thiopheneacetonitrile with lithium aluminum hydride. Ru.

(3) 特開昭51−118760号公報に記載されている方
法は、次式 (式中、Rは置換されたアルキル、アリールま
たはアルキル基を表す)で示される化合物をア
ンモニアと反応させることにより直接的に、あ
るいはフタルイミドと反応させい、次式 で示される化合物を得、その後、アミンまたは
ヒドラジン水和物でトランスアミノ化すること
によつてなされている。
(3) The method described in JP-A-51-118760 is based on the following formula (wherein R represents a substituted alkyl, aryl or alkyl group) directly by reacting with ammonia or by reacting with phthalimide, the compound represented by the following formula: This is accomplished by obtaining the compound represented by and then transaminating it with an amine or hydrazine hydrate.

(4) 殴州特許出願公開(Eur.Pat.Appl)69002号
に記載されている方法は、2−(2−ビニルニ
トロ)チオフエンをパラジウム−カーボン存在
下還元することによりオキシムとし、その後、
ラネ−ニツケル存在下還元することによりなさ
れている。
(4) The method described in Eur.Pat.Appl No. 69002 is to reduce 2-(2-vinylnitro)thiophene to an oxime in the presence of palladium-carbon, and then,
This is done by reduction in the presence of Raney-nickel.

(発明が解決しようとする問題点) しかし、(1)、(2)の方法は、水素化工程において
水素化リチウムアルミニウムを使用しており、工
業的に取り扱い上危険である。また、(3)の方法の
アンモニアによる直接アミノ化においては、2
級、3級アミンの生成が見られ、精製分離に非常
に煩雑な操作が必要である。さらに、フタルイミ
ドを得てトランスアミノ化する方法と(4)の方法に
おいては、反応が二段階であり、中間体の単離精
製の操作を必要とする。
(Problems to be Solved by the Invention) However, methods (1) and (2) use lithium aluminum hydride in the hydrogenation step, which is industrially dangerous to handle. In addition, in the direct amination with ammonia in method (3), 2
The formation of primary and tertiary amines is observed, and very complicated operations are required for purification and separation. Furthermore, in the method of obtaining phthalimide and transaminating it and method (4), the reaction is in two steps and requires operations for isolation and purification of intermediates.

以上、いずれの方法も工業的に応用が困難で、
2−(2−チエニル)エチルアミンの製造実施プ
ロセスとはいいがたい。
All of the above methods are difficult to apply industrially,
This cannot be said to be a process for producing 2-(2-thienyl)ethylamine.

(問題点を解決するための手段および作用) 本発明者らは、上記の問題点を解決するため鋭
意検討した結果、次式() で示される2−チオフエンアセトニトリルを酸性
ジメチルスルホキシド中、水素化ホウ素ナトリウ
ムで還元することによる次式() で示される2−(2−チエニル)エチルアミンの
製造方法を見い出した。
(Means and effects for solving the problems) As a result of intensive studies to solve the above problems, the inventors found that the following formula () The following formula () is obtained by reducing 2-thiopheneacetonitrile represented by with sodium borohydride in acidic dimethyl sulfoxide. We have discovered a method for producing 2-(2-thienyl)ethylamine represented by:

反応は、チオフエンアセトニトリルと水素化ホ
ウ素ナトリウムを1対1〜10倍モル、望ましくは
1対1〜4倍モルの割合でDMSOに溶解し、そ
の溶液に、酸性物質としてメタンスルホン酸、エ
タンスルホン酸、ベンゼンスルホン酸またはパラ
トルエンスルホン酸を、チオフエンアセトニトリ
ルに対して1〜15倍モル、望ましくは2〜5倍モ
ルを添加したDMSO溶液を0.5〜1時間で滴下し、
滴下後、50〜100℃で1〜3時間加熱して行われ
る。目的物2−(2−チエニル)エチルアミンは
塩基性物質であり、公知の精製操作により容易に
単離することができる。
The reaction is carried out by dissolving thiopheneacetonitrile and sodium borohydride in DMSO at a ratio of 1 to 1 to 10 times the mole, preferably 1 to 1 to 4 times the mole, and adding methanesulfonic acid and ethanesulfone as acidic substances to the solution. A DMSO solution to which an acid, benzenesulfonic acid or para-toluenesulfonic acid is added in an amount of 1 to 15 times the mole, preferably 2 to 5 times the mole of thiophene acetonitrile, is added dropwise over 0.5 to 1 hour.
After dropping, heating is performed at 50 to 100°C for 1 to 3 hours. The target product, 2-(2-thienyl)ethylamine, is a basic substance and can be easily isolated by known purification procedures.

(発明の効果) 従来、含硫化合物のニトリルを還元によつて当
該アミンにする技術は、ほとんどが水素化リチウ
ムアルミニウムを使用していたが、本発明によ
り、工業的に水素化リチウムアルミニウムと比べ
安全に取り扱いのできる水素化ホウ素ナトリウム
を使用することが可能となり、2−(2−チエニ
ル)エチルアミンを高収率で、かつ安全に製造す
ることができる。
(Effects of the Invention) Conventionally, most of the technologies to convert the sulfur-containing compound nitrile into the amine by reduction used lithium aluminum hydride, but with the present invention, compared to lithium aluminum hydride, It becomes possible to use sodium borohydride, which can be handled safely, and 2-(2-thienyl)ethylamine can be produced safely in high yield.

(実施例) 次に、本発明の実施例を挙げて説明するが、こ
の実施例によつて本発明が限定されるものではな
い。
(Example) Next, the present invention will be described with reference to Examples, but the present invention is not limited to these Examples.

実施例 1 2−(2−チエニル)エチルアミン 水素化ホウ素ナトリウム3.84g(101.6mmol)
と2−チオフエンアセトニトリル5.0g(40.7m
mol)を含むDMSO溶液50mlに、メタンスルホン
酸9.2ml(142.5mmol)を含むDMSO溶液50mlを
い30分で滴下し、70℃で2時間反応を行なつた。
反応終了後、10%水酸化ナトリウム水溶液70mlを
添加し、エーテル50mlで3回抽出した。さらに、
そのエーテル層を0.1N水酸化ナトリウム50mlで
3回洗浄し、DMSOを除去した。そのエーテル
層を10%塩酸50mlで3回抽出した。その水層を10
%水酸化ナトリウムでPH12とし、エーテル100ml
で3回抽出した。エーテル層を乾燥後、エーテル
を留出して、2−(2−チエニル)エチルアミン
3.3g(収率64%)を得た。
Example 1 2-(2-thienyl)ethylamine Sodium borohydride 3.84g (101.6mmol)
and 2-thiopheneacetonitrile 5.0g (40.7m
50 ml of a DMSO solution containing 9.2 ml (142.5 mmol) of methanesulfonic acid was added dropwise over 30 minutes to 50 ml of a DMSO solution containing 50 ml of methanesulfonic acid, and the reaction was carried out at 70°C for 2 hours.
After the reaction was completed, 70 ml of 10% aqueous sodium hydroxide solution was added, and the mixture was extracted three times with 50 ml of ether. moreover,
The ether layer was washed three times with 50 ml of 0.1N sodium hydroxide to remove DMSO. The ether layer was extracted three times with 50 ml of 10% hydrochloric acid. 10 that water layer
% sodium hydroxide to pH 12 and ether 100ml
Extracted three times. After drying the ether layer, the ether is distilled off to give 2-(2-thienyl)ethylamine.
3.3g (64% yield) was obtained.

NMR、元素分析値を以下に示すが、これは目
的物の構造を支持する。
NMR and elemental analysis values are shown below, which support the structure of the target product.

NMR(CDCl3) δ(ppm) 1.13(s、2H) 3.00(s、4H) 7.05(m、3H) 元素分析 理論値 分析値 C 56.69% 56.57% H 7.09% 7.16% N 11.02% 11.21% S 25.20% 25.06% 実施例 2 2−(2−チエニル)エチルアミン 水素化ホウ素ナトリウム1.9g(45mmol)と
2−チオフエンアセトニトリル2.21g(18m
mol)を含むDMSO溶液30mlに、パラトルエンス
ルホン酸10.8g(63mmol)を含むDMSO溶液30
mlを30分で滴下し、70℃で2時間反応させた。反
応終了後は、実施例1と同様の後処理を行ない、
2−(2−チエニル)エチルアミン1.17g(収率
51%)を得た。
NMR (CDCl 3 ) δ (ppm) 1.13 (s, 2H) 3.00 (s, 4H) 7.05 (m, 3H) Elemental analysis Theoretical value Analytical value C 56.69% 56.57% H 7.09% 7.16% N 11.02% 11.21% S 25.20 % 25.06% Example 2 2-(2-thienyl)ethylamine 1.9 g (45 mmol) of sodium borohydride and 2.21 g (18 mmol) of 2-thiopheneacetonitrile
30 ml of a DMSO solution containing 10.8 g (63 mmol) of para-toluenesulfonic acid
ml was added dropwise over 30 minutes and reacted at 70°C for 2 hours. After the reaction was completed, the same post-treatment as in Example 1 was carried out,
2-(2-thienyl)ethylamine 1.17g (yield
51%).

MMR、元素分析値は、目的物の構造を支持す
る。
MMR, elemental analysis values support the structure of the target object.

実施例 3 2−(2−チエニル)エチルアミン 水素化ホウ素ナトリウム3.84g(101.6mmol)
と2−チオフエンアセトニトリル5.0g(40.7m
mol)を含むDMSO溶液50mlに、エタンスルホン
酸15.7g(142.5mmol)を含むDMSO溶液50mlを
30分で滴下し、70℃で2時間反応を行なつた。反
応終了後は、実施例1と同様の後処理を行ない、
2−(2−チエニル)エチルアミン3.0g(収率58
%)を得た。
Example 3 2-(2-thienyl)ethylamine Sodium borohydride 3.84g (101.6mmol)
and 2-thiopheneacetonitrile 5.0g (40.7m
Add 50 ml of a DMSO solution containing 15.7 g (142.5 mmol) of ethanesulfonic acid to 50 ml of a DMSO solution containing 15.7 g (142.5 mmol) of ethanesulfonic acid.
The mixture was added dropwise over 30 minutes, and the reaction was carried out at 70°C for 2 hours. After the reaction was completed, the same post-treatment as in Example 1 was carried out,
2-(2-thienyl)ethylamine 3.0g (yield 58
%) was obtained.

MMR、元素分析値は、目的物の構造を支持す
る。
MMR, elemental analysis values support the structure of the target object.

実施例 4 2−(2−チエニル)エチルアミン 水素化ホウ素ナトリウム2.5g(59mmol)と
2−チオフエンアセトニトリル2.9g(23.4m
mol)を含むDMSO溶液50mlに、ベンゼンスルホ
ン酸13.1g(82.6mmol)を含むDMSO溶液50ml
を30分で滴下し、70℃で2時間反応を行なつた。
反応終了後は、実施例1と同様の後処理を行な
い、2−(2−チエニル)エチルアミン3.0g(収
率46%)を得た。
Example 4 2-(2-thienyl)ethylamine 2.5 g (59 mmol) of sodium borohydride and 2.9 g (23.4 mmol) of 2-thiopheneacetonitrile
mol) in 50 ml of DMSO solution containing 13.1 g (82.6 mmol) of benzenesulfonic acid.
was added dropwise over 30 minutes, and the reaction was carried out at 70°C for 2 hours.
After the reaction was completed, the same post-treatment as in Example 1 was carried out to obtain 3.0 g (yield: 46%) of 2-(2-thienyl)ethylamine.

NMR、元素分析値は、目的物の構造を支持す
る。
NMR and elemental analysis values support the structure of the target product.

参考例 水素化ホウ素ナトリウム1.9g(45mmol)と
2−チオフエンアセトニトリル2.21g(18m
mol)を含むDMSO溶液40mlを、70℃で2時間反
応させた。反応終了後は、実施例1と同様の後処
理を行なつたが、2−(2−チエニル)エチルア
ミンは得られなかつた。
Reference example 1.9g (45mmol) of sodium borohydride and 2.21g (18mmol) of 2-thiopheneacetonitrile
40 ml of DMSO solution containing mol) was reacted at 70°C for 2 hours. After the reaction was completed, the same post-treatment as in Example 1 was carried out, but 2-(2-thienyl)ethylamine was not obtained.

Claims (1)

【特許請求の範囲】 1 次式() で示される2−チオフエンアセトニトリルを酸性
ジメチルスルホキシド中、水素化ホウ素ナトリウ
ムで還元することを特徴とする次式() で示される2−(2−チエニル)エチルアミンの
製造方法。 2 酸性ジメチルスルホキシドを調整するため
に、メタンスルホン酸、エタンスルホン酸、ベン
ゼンスルホン酸またはパラトルエンスルホン酸を
添加する特許請求の範囲第1項記載の2−(2−
チエニル)エチルアミンの製造方法。
[Claims] Linear formula () The following formula () is characterized in that 2-thiopheneacetonitrile represented by is reduced with sodium borohydride in acidic dimethyl sulfoxide. A method for producing 2-(2-thienyl)ethylamine shown by 2. 2-(2-
Method for producing thienyl)ethylamine.
JP25189586A 1986-10-24 1986-10-24 Production of 2-(2-thienyl)ethylamine Granted JPS63107973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25189586A JPS63107973A (en) 1986-10-24 1986-10-24 Production of 2-(2-thienyl)ethylamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25189586A JPS63107973A (en) 1986-10-24 1986-10-24 Production of 2-(2-thienyl)ethylamine

Publications (2)

Publication Number Publication Date
JPS63107973A JPS63107973A (en) 1988-05-12
JPH0440354B2 true JPH0440354B2 (en) 1992-07-02

Family

ID=17229546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25189586A Granted JPS63107973A (en) 1986-10-24 1986-10-24 Production of 2-(2-thienyl)ethylamine

Country Status (1)

Country Link
JP (1) JPS63107973A (en)

Also Published As

Publication number Publication date
JPS63107973A (en) 1988-05-12

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