JP4296267B2 - Novel N-sulfenyl substituted heterocyclic compound and method for producing the same - Google Patents
Novel N-sulfenyl substituted heterocyclic compound and method for producing the same Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 17
- -1 thiazolidine-2,4-dione compound Chemical class 0.000 claims description 20
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 125000003277 amino group Chemical group 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 4
- 229910052794 bromium Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000921 elemental analysis Methods 0.000 description 3
- 239000000417 fungicide Substances 0.000 description 3
- 239000004009 herbicide Substances 0.000 description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- ZOBPZXTWZATXDG-UHFFFAOYSA-N 1,3-thiazolidine-2,4-dione Chemical compound O=C1CSC(=O)N1 ZOBPZXTWZATXDG-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 239000012156 elution solvent Substances 0.000 description 2
- OAYLNYINCPYISS-UHFFFAOYSA-N ethyl acetate;hexane Chemical compound CCCCCC.CCOC(C)=O OAYLNYINCPYISS-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000010898 silica gel chromatography Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- PFRUBEOIWWEFOL-UHFFFAOYSA-N [N].[S] Chemical compound [N].[S] PFRUBEOIWWEFOL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 150000001263 acyl chlorides Chemical class 0.000 description 1
- 150000001348 alkyl chlorides Chemical class 0.000 description 1
- 239000002168 alkylating agent Substances 0.000 description 1
- 229940100198 alkylating agent Drugs 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 125000004744 butyloxycarbonyl group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229940117389 dichlorobenzene Drugs 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 1
- AXJLXCHFMVQTNQ-UHFFFAOYSA-N ethyl 2-(benzimidazol-1-ylsulfanyl)benzoate Chemical compound CCOC(=O)C1=CC=CC=C1SN1C2=CC=CC=C2N=C1 AXJLXCHFMVQTNQ-UHFFFAOYSA-N 0.000 description 1
- DWHWPWKPSDLMNS-UHFFFAOYSA-N ethyl 2-aminosulfanylbenzoate Chemical compound CCOC(=O)C1=CC=CC=C1SN DWHWPWKPSDLMNS-UHFFFAOYSA-N 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 125000005935 hexyloxycarbonyl group Chemical group 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 125000005929 isobutyloxycarbonyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])OC(*)=O 0.000 description 1
- 125000005928 isopropyloxycarbonyl group Chemical group [H]C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000001148 pentyloxycarbonyl group Chemical group 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 125000004742 propyloxycarbonyl group Chemical group 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000004646 sulfenyl group Chemical group S(*)* 0.000 description 1
- FWMUJAIKEJWSSY-UHFFFAOYSA-N sulfur dichloride Chemical compound ClSCl FWMUJAIKEJWSSY-UHFFFAOYSA-N 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical class ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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- Thiazole And Isothizaole Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
本発明は、新規なＮ−スルフェニル置換複素環化合物であるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物及びその製造方法に関するものである。 The present invention relates to an N-sulfenylthiazolidine-2,4-dione compound which is a novel N-sulfenyl substituted heterocyclic compound and a method for producing the same.
分子内に窒素−イオウ（Ｎ−Ｓ）結合を有するスルフェンアミド化合物は、種々の機能性を持つことが報告されている（非特許文献１）。
たとえば、ゴムの加硫化剤（特許文献１、特許文献２）、発芽前処理用除草剤（特許文献３）、殺菌剤（特許文献４）等が知られている。特に、チアゾリジン-2,4-ジオン化合物の窒素上にスルフェニル置換基を有する場合は、寄生虫殺滅作用（特許文献５、特許文献６）やゴムの硬化抑制作用（特許文献７）を有する化合物として有効であることが知られている。
これらのことから、新規なＮ−スルフェニル置換複素環化合物を得ることは、当該技術の背景を考えると、重要なことである。
It has been reported that a sulfenamide compound having a nitrogen-sulfur (NS) bond in the molecule has various functions (Non-patent Document 1).
For example, rubber vulcanizing agents (Patent Documents 1 and 2), herbicides for pre-emergence treatment (Patent Document 3), fungicides (Patent Document 4), and the like are known. In particular, when a sulfenyl substituent is present on the nitrogen of the thiazolidine-2,4-dione compound, it has a parasite-killing action (Patent Documents 5 and 6) and a rubber curing inhibitory action (Patent Document 7). It is known to be effective as a compound.
From these facts, it is important to obtain a novel N-sulfenyl-substituted heterocyclic compound in view of the background of the technology.
従来から知られている複素環化合物の窒素原子上に置換基を導入する方法では、複素環化合物に対して、アシルクロライド類、アルキルクロライド類、スルフォニルクロライド類のようなアシル化剤、アルキル化剤、スルフォニル化剤を反応させることが一般的であった。
そのため、窒素上にスルフェニル基を導入するためには、同様な考え方でスルフェニルハライド化合物を用いることが必要であると考えられる。
スルフェニルクロライド化合物やスルフェニルブロマイドのようなスルフェニルハライド化合物は、チオール類またはジスルフィド類に対して、塩素や臭素を反応させるという方法を用いなければ製造できない化合物である。しかしながら、塩素や臭素は有毒であり、危険な化合物であり、製造に際しては、危険を伴い、そのために製造工程では危険を回避する種々の手段を講ずる必要があった。このようなことから、塩素や臭素を用いない製造方法の開発が望まれていた。
In a conventionally known method for introducing a substituent onto a nitrogen atom of a heterocyclic compound, acylating agents such as acyl chlorides, alkyl chlorides, and sulfonyl chlorides, alkylating agents are used for the heterocyclic compound. It was common to react with a sulfonylating agent.
Therefore, in order to introduce a sulfenyl group on nitrogen, it is considered necessary to use a sulfenyl halide compound in the same manner.
A sulfenyl halide compound such as a sulfenyl chloride compound or sulfenyl bromide is a compound that cannot be produced unless a method of reacting thiols or disulfides with chlorine or bromine is used. However, chlorine and bromine are toxic and dangerous compounds, and there are dangers in the production. For this reason, it is necessary to take various measures to avoid the dangers in the production process. Therefore, development of a production method that does not use chlorine or bromine has been desired.
本発明の課題は、新規なＮ−スルフェニル置換複素環化合物であるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物及びその新規な方法を提供することである。 An object of the present invention is to provide an N-sulfenylthiazolidine-2,4-dione compound which is a novel N-sulfenyl substituted heterocyclic compound and a novel method thereof.
本発明者らは、Ｎ−スルフェニル置換複素環化合物の製造方法について鋭意研究を重ねた結果、スルフェンアミド化合物の窒素−硫黄結合（Ｓ−Ｎ結合）が開裂することに注目し、スルフェニル化剤と、特定のチアゾリジン-2,4-ジオン化合物を反応させると、Ｎ−スルフェニルチアゾリジン-2,4-ジオン化合物を得ることができることを見出して、本発明を完成させたものである。 As a result of intensive studies on the production method of N-sulfenyl-substituted heterocyclic compounds, the present inventors have noticed that the nitrogen-sulfur bond (S—N bond) of the sulfenamide compound is cleaved. The present invention has been completed by finding that an N-sulfenylthiazolidine-2,4-dione compound can be obtained by reacting an agent with a specific thiazolidine-2,4-dione compound.
この出願は以下の発明を提供するものである。
（１）下記一般式（Ａ）で表されるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物を製造する方法において、下記一般式（Ｂ）で表されるスルフェニル化剤と、下記一般式（Ｃ）で表されるチアゾリジン-2,4-ジオン化合物を反応させることを特徴とするＮ−スルフェニルチアゾリジン-2,4-ジオン化合物の製造方法。
(1) In a method for producing an N-sulfenylthiazolidine-2,4-dione compound represented by the following general formula (A), a sulfenylating agent represented by the following general formula (B) and the following general formula: A method for producing an N-sulfenylthiazolidine-2,4-dione compound, comprising reacting a thiazolidine-2,4-dione compound represented by (C).
本発明で得られるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物は、新規な除草剤、殺菌剤である。本発明のＮ−スルフェニルチアゾリジン-2,4-ジオン化合物の製造法によれば、スルフェンアミド化合物の窒素-イオウ結合が比較的開裂しやすいことに注目し、スルフェニル化剤とチアゾリジン-2,4-ジオン化合物を反応させる新規な製造方法であり、塩素や臭素を用いることなく安全にかつ容易にＮ−スルフェニルチアゾリジン-2,4-ジオン化合物化合物を製造することができ、従来のこの種の方法として用いられていた製造方法と比較して優れた方法である。 The N-sulfenylthiazolidine-2,4-dione compound obtained in the present invention is a novel herbicide and fungicide. According to the method for producing the N-sulfenylthiazolidine-2,4-dione compound of the present invention, attention is paid to the fact that the nitrogen-sulfur bond of the sulfenamide compound is relatively easily cleaved. , 4-dione compound is a novel production method, and N-sulfenylthiazolidine-2,4-dione compound compound can be produced safely and easily without using chlorine or bromine. It is an excellent method compared with the production method used as a seed method.
本発明の目的化合物は、下記一般式（Ａ）で表されるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物である。
前記Ｒ１のアルコキシカルボニル基の具体例としては、メトキシカルボニル、エトキシカルボニル、プロポキシカルボニル、イソプロポキシカルボニル、シクロプロポキシカルボニル、ブトキシカルボニル、イソブトキシカルボニル、t-ブトキシカルボニル、ペンチロキシカルボニル、ヘキシロキシカルボニル、シクロヘキシロキシルカルボニル基等が挙げられる。 Specific examples of the alkoxycarbonyl group for R 1 include methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, cyclopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, t-butoxycarbonyl, pentyloxycarbonyl, hexyloxycarbonyl, Examples thereof include a cyclohexyloxycarbonyl group.
前記一般式（Ａ）で表されるＮ−スルフェニルチアゾリジン-2,4-ジオン化合物を製造する方法は、下記一般式（Ｂ）で表されるスルフェニル化剤に対し、下記一般式（Ｃ）で表されるチアゾリジン-2,4-ジオン化合物を反応させる。
前記（Ｂ）の化合物のＸの脱離基は、反応に際し脱離する基であり、Ｎ原子のＨが離れ、ＳＮ結合が生成される。
脱離基の具体例は、アミノ基またはベンゾイミダゾリル−１−イル基である。
The leaving group of X in the compound (B) is a group that is eliminated during the reaction, and the H of the N atom is released, and an SN bond is generated.
Specific examples of the leaving group are an amino group or a benzimidazolyl-1-yl group.
前記（Ｂ）、（Ｃ）は公知物質である。
（Ｂ）はチオール化合物のアミノ化反応、あるいはスルフェンアミド化合物と複素環化合物から製造することができる。
前記（Ｃ）は、チアゾリジン-2-チオキソ-4-オンから製造することができる。
The (B) and (C) are known substances.
(B) can be produced from an amination reaction of a thiol compound or from a sulfenamide compound and a heterocyclic compound.
Said (C) can be produced from thiazolidine-2-thioxo-4-one.
前記Ｎ−スルフェニルチアゾリジン化合物を製造する方法は、以下の通りである。反応は、好ましくは反応溶媒の存在下で実施される。この場合の反応溶媒は、ベンゼン、トルエン、キシレン、クロロベンゼン、ジクロロベンゼン、アニソール、アセトニトリル、テトラヒドロフラン、1,4-ジオキサン、メタノール、エタノール等の有機溶媒中で行われる。また、これらの溶媒は単独または混合溶媒の形で使用される。 A method for producing the N-sulfenylthiazolidine compound is as follows. The reaction is preferably carried out in the presence of a reaction solvent. The reaction solvent in this case is carried out in an organic solvent such as benzene, toluene, xylene, chlorobenzene, dichlorobenzene, anisole, acetonitrile, tetrahydrofuran, 1,4-dioxane, methanol, ethanol and the like. These solvents are used alone or in the form of a mixed solvent.
前記製造方法は、０℃〜１５０℃の範囲の温度で行うことができる。低温すぎると反応時間が遅くなり、高すぎると異常な分解反応や副反応が多くなるので、２０℃〜１２０℃の範囲で実施することが好ましい。反応時間は、反応温度により左右され、一概に定めることはできないが、通常は２〜１０時間で十分である。 The said manufacturing method can be performed at the temperature of the range of 0 to 150 degreeC. If the temperature is too low, the reaction time will be delayed, and if it is too high, abnormal decomposition reactions and side reactions will increase. The reaction time depends on the reaction temperature and cannot be determined in general, but usually 2 to 10 hours is sufficient.
本発明で得られるＮ−スルフェニルチアゾリジン化合物の具体例について例示すると以下の化学式（１）で示される化合物である。
これら本発明の化合物は、除草剤、殺菌剤として用いられる。 These compounds of the present invention are used as herbicides and fungicides.
次に、本発明を実施例により詳細に説明する。
本発明の実施例は本発明の理解を容易にするために代表的な化合物の一例をあげたものであり、本発明はこれだけに限定されるものではない。
下記実施例によって製造することにより得られるＮ−スルフェニルチアゾリジン化合物は、新規化合物であり、各種スペクトルと元素分析の結果を主要な判定基準として同定した。
その物性値としては、融点、核磁気共鳴スペクトル（１Ｈ−ＮＭＲ、１３Ｃ−ＮＭＲ）、赤外吸収スペクトル（ＩＲ）、元素分析値の順にそれぞれ記した。
Next, the present invention will be described in detail with reference to examples.
The examples of the present invention are examples of representative compounds for facilitating the understanding of the present invention, and the present invention is not limited thereto.
The N-sulfenylthiazolidine compound obtained by the production according to the following examples is a novel compound, and the results of various spectra and elemental analysis were identified as main criteria.
The physical property values are described in the order of melting point, nuclear magnetic resonance spectrum ( 1 H-NMR, 13 C-NMR), infrared absorption spectrum (IR), and elemental analysis value.
内容積３０ｍｌのガラス製容器中にN-(2-エトキシカルボニルベンゼンスルフェニル)ベンゾイミダゾール（２９８ｍｇ，１．０ｍｍｏｌ）とチアゾリジン-2,4-ジオン（２３４ｍｇ，２．０ｍｍｏｌ）をテトラヒドロフラン（１０ｍｌ）に溶解させ、室温で５時間攪拌した。テトラヒドロフランを減圧下留去させ、粗生成物をシリカゲルクロマトグラフィー（溶出溶媒、塩化メチレン：酢酸エチル＝２０：１）で精製した。さらに酢酸エチル−ヘキサンで再結晶することにより、目的生成物を得た。目的生成物の構造式は、化合物（１）のＮ−スルフェニル置換複素環化合物である確認した。
収率 ８２％；融点 153-156 ℃；1H-NMR (CDCl3) δ 1.42 (3H, t, J = 7.3 Hz), 4.22 (2H, s), 4.45 (2H, q, J = 7.3 Hz), 6.78 (1H, d, J = 8.2 Hz), 7.27 (1H, dd, J = 7.6, 6.7 Hz), 7.50 (1H, ddd, J = 8.2, 6.7, 1.5 Hz), 8.07 (1H, dd, J = 7.6, 1.5 Hz)；13C NMR (CDCl3) δ 14.3, 34.3, 62.1, 120.9, 125.0, 125.5, 131.2, 133.6, 141.0, 167.2, 171.06, 171.10；IR (KBr) νmax 1701, 1265, 1152, 1125, 743 cm-1.
Ｃ１２Ｈ１１ＮＯ４Ｓ２としての元素分析値（％）
測定値：C,48.73; H,4.64; N,3.52
計算値：C,48.47; H,4.71; N,3.73
N- (2-ethoxycarbonylbenzenesulfenyl) benzimidazole (298 mg, 1.0 mmol) and thiazolidine-2,4-dione (234 mg, 2.0 mmol) were added to tetrahydrofuran (10 ml) in a glass container having an internal volume of 30 ml. Dissolved and stirred at room temperature for 5 hours. Tetrahydrofuran was distilled off under reduced pressure, and the crude product was purified by silica gel chromatography (elution solvent, methylene chloride: ethyl acetate = 20: 1). Furthermore, the target product was obtained by recrystallization with ethyl acetate-hexane. The structural formula of the target product was confirmed to be the N-sulfenyl substituted heterocyclic compound of Compound (1).
Yield 82%; Melting point 153-156 ° C; 1 H-NMR (CDCl 3 ) δ 1.42 (3H, t, J = 7.3 Hz), 4.22 (2H, s), 4.45 (2H, q, J = 7.3 Hz) , 6.78 (1H, d, J = 8.2 Hz), 7.27 (1H, dd, J = 7.6, 6.7 Hz), 7.50 (1H, ddd, J = 8.2, 6.7, 1.5 Hz), 8.07 (1H, dd, J = 7.6, 1.5 Hz); 13 C NMR (CDCl 3 ) δ 14.3, 34.3, 62.1, 120.9, 125.0, 125.5, 131.2, 133.6, 141.0, 167.2, 171.06, 171.10; IR (KBr) ν max 1701, 1265, 1152 , 1125, 743 cm -1 .
Elemental analysis value (%) as C 12 H 11 NO 4 S 2
Measurements: C, 48.73; H, 4.64; N, 3.52
Calculated value: C, 48.47; H, 4.71; N, 3.73
実施例１の反応をテトラヒドロフランの代わりにメタノールを用いて行うことにより、化合物（１）のＮ−スルフェニル置換複素環化合物を収率６９％で得ることができた。 By carrying out the reaction of Example 1 using methanol instead of tetrahydrofuran, an N-sulfenyl-substituted heterocyclic compound of Compound (1) could be obtained in a yield of 69%.
内容積３０ｍｌのガラス製容器中にスルフェナモイル安息香酸エチル（１９７ｍｇ，１．０ｍｍｏｌ）とチアゾリジン-2,4-ジオン（１．２ｍｍｏｌ）をトルエン（１０ｍｌ）に溶解させ、１００℃で１０時間攪拌した。トルエンを減圧下留去させ、粗生成物をシリカゲルクロマトグラフィー（溶出溶媒、塩化メチレン：酢酸エチル＝１００：１）で精製した。さらに酢酸エチル−ヘキサンで再結晶することにより、目的生成物を得た。化合物（１）のＮ−スルフェニル置換複素環化合物を収率４８％で得ることができた。 In a glass container having an internal volume of 30 ml, ethyl sulfenamoylbenzoate (197 mg, 1.0 mmol) and thiazolidine-2,4-dione (1.2 mmol) were dissolved in toluene (10 ml) and stirred at 100 ° C. for 10 hours. Toluene was distilled off under reduced pressure, and the crude product was purified by silica gel chromatography (elution solvent, methylene chloride: ethyl acetate = 100: 1). Furthermore, the target product was obtained by recrystallization with ethyl acetate-hexane. The N-sulfenyl-substituted heterocyclic compound (1) was obtained in a yield of 48%.
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