• 제목/요약/키워드: 2-Aminothiophenol

검색결과 12건 처리시간 0.02초

Solid-Phase Synthesis of 2-Arylbenzothiazole Using Silica Sulfuric Acid under Microwave Irradiation

  • Niralwad, Kirti S.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • Bulletin of the Korean Chemical Society
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    • 제31권4호
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    • pp.981-983
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    • 2010
  • The condensation of several aromatic/heteroaromatic aldehydes with 2-aminothiophenol catalyzed by silica sulfuric acid under microwave irradiation afforded 2-arylbenzothiazoles in high yields and short reaction times under solvent-free conditions. The major advantages of the present method are good yields, ecofriendly, reusable catalyst, mild and solvent-free reaction conditions.

벤조티아졸기를 갖는 새로운 크라운 에테르의 합성 (Synthesis of New Crown Ethers Containing Benzothiazole Group)

  • 장승현;연애숙;정광보
    • 대한화학회지
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    • 제40권2호
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    • pp.117-121
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    • 1996
  • Crown 고리 근방에 질소, 황원자 를 포함하는 새로운2종의 crown ether를 합성하였다. 4'-Benzothiazolylbenzo-12-crown-4 (1) 4'-Benzothiazolylbenzo-15-crown-5 (2)는 각각 4'-formylbenzo-12-crown-4 (3)및4'-formylbenzo-15-crown-5 (4)와 2-aminothiophenol과의 반응에 의해 합성하였다. (3)과(4)는 3, 4-dihydroxybenzaidehyde와 tri-및 tetraethyleneglycolditosylate와의 반응에 의해 합성하였다. Triethyleneglycolditosylate와 tetraethyleneglycol ditosylate는 NaOH 존재하에서 triethyleneglycol, tetraethyyleneglyco.과 p-toluenesulfonyl chloride의 반응에 의해 합성하였다.

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Synthesis of 2-Arylbenzothiazoles Catalyzed by Biomimetic Catalyst, β-Cyclodextrin

  • Londhe, Balaji S.;Pratap, Umesh R.;Mali, Jyotirling R.;Mane, Ramrao A.
    • Bulletin of the Korean Chemical Society
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    • 제31권8호
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    • pp.2329-2332
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    • 2010
  • Cyclocondensation of 2-aminothiophenol and aryl/heteryl aldehydes has been carried using biomimetic catalyst, $\beta$-Cyclodextrin in water and obtained 2-aryl/heteryl benzothiazoles with better to excellent yields. This biomimetic catalyzed route is simple, economic, and environmentally benign.

SnO2/SiO2 Nanocomposite Catalyzed One-Pot Synthesis of 2-Arylbenzothiazole Derivatives

  • Yelwande, Ajeet A.;Navgire, Madhukar E.;Tayde, Deepak T.;Arbad, Balasaheb R.;Lande, Machhindra K.
    • Bulletin of the Korean Chemical Society
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    • 제33권6호
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    • pp.1856-1860
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    • 2012
  • $SnO_2/SiO_2$ nanocomposite has been synthesized by using sol-gel method. Prepared catalytic materials has been well characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmer-Teller (BET) surface area, and temperature-programmed desorption of ammonia ($NH_3$-TPD). $SnO_2/SiO_2$ nanocomposite catalyzed synthesis of 2-arylbenzothiazoles by the cyclocondensation of 2-aminothiophenol and aromatic aldehydes under reflux condition in 1:1 EtOH:$H_2O$. After completion of the reaction, catalyst can be recovered efficiently and reused with consistent activity.

Synthesis of Several New Isoxazole, Imidazo[1, 2-a]pyridine, Imidazo[1, 2-a]pyrimidine, Benzoxadiazine and Benzothiazine Derivatives from Hydroximoyl Halides

  • Abdelhamid, Abdou O.;Abdou, Sadek E.;Mahgoub, Sayed A.
    • Archives of Pharmacal Research
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    • 제15권4호
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    • pp.317-321
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    • 1992
  • Furoyldroximoyl chloride 3d reacted with 2-aminopyridine, 2-aminopyrimidine. O-aminophenol, O-phenylenediamine and aminothiophenol to afford imidazo [1, 2-a]pyridine 6. imidazo[1, 2-a]pyrimidine 8, benzoxadiazine 10, nitrosobenzopyrizine 13a and nitrosobenzothiazine 13b, respectively. Isoxazoline 18 and pyrrolidino[3, 4-d]isoxazolin-4, 6-dione derivatives 19a and 19b obtained by the reaction of 3 with acrylonitrile and N-arylmaleimide. Hydroximoyl chloride 3 reacted with thiophenol and sodium benzene-sulfinate to yield furylglyoxaloxime 16a and 16b, respectively. Hydroximoyl chloride 3 reacted also with some active methylene compound to give isoxazole derivatives 20-23, respectively.

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유기황화합물-Polyphenylenediamine리튬전지용 정극의 전기적특성 (Electrical Characterization of Organo Sulfur Compound-Polyphenylenediamine Positive Electrode in Lithium Battery)

  • 박수길;박종은;손원근;김상욱;임기조;이주성
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1997년도 춘계학술대회 논문집
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    • pp.261-264
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    • 1997
  • Polyphenylenediamine(PPD)film was prepared with organo sulfur compond (2-aminothiophenol, 1,2-ethanedithiol, and 2-aminoethaneethiol etc.) adding lithium salt to increase the electrical conductivity of the polymer surface. The molecular structure of conductive polymer synthesized were examined and discussed by using SEM, FT-IR, NMR etc. The elecrical conductivity messurement were carried out with four-probe method at dry box of He and $N_2$atmosphere. The typical value of successful electrical conductivity was 1.2$\times$10$^1$S/cm at room temperature.

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Synthesis of Silver Nanoplates with Fibronectin Nanofibril Template and Their SERS Applications

  • Wang, Li;Sun, Yujing;Cui, Yuncheng;Wang, Jiku;Li, Zhuang
    • Bulletin of the Korean Chemical Society
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    • 제34권2호
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    • pp.443-446
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    • 2013
  • In this work, a novel strategy is provided to prepare silver nanoplates by a fibronectin (Fn) nanofibril template. First, Fn molecules were controlled to assemble into amyloid-like nanofibrils in highly concentrated ethanol aqueous solution. The resultant nanofibrils could serve as a soft template to direct the formation of silver nanoplates. It is worth noting that the silver nanoplates are excellent surface-enhanced Raman scattering (SERS) substrate with 4-aminothiophenol (4-ATP) molecule as a test probe. This high active SERS substrate can also be used to detect drug molecule, 2-thiouracil with high sensitivity.

One-pot Synthesis of Benzimidazoles and Benzothiazoles in the Presence of Fe(HSO4)3 as a New and Efficient Oxidant

  • Eshghi, Hossein;Rahimizadeh, Mohammad;Shiri, Ali;Sedaghat, Parisa
    • Bulletin of the Korean Chemical Society
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    • 제33권2호
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    • pp.515-518
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    • 2012
  • A series of substituted benzimidazoles and benzothiazoles were prepared through the one-pot reaction of ophenylenediamine and o-aminothiophenol with various aldehydes in the presence of ferric hydrogensulfate both in EtOH and water as solvent. The reactions proceed smoothly in excellent yield, high chemoselectivity and with an easy work-up.

Assembly of Gold Nanoparticles on Electrospun Polymer Nanofiber Film for SERS Applications

  • Wang, Li;Sun, Yujing;Wang, Jiku;Li, Zhuang
    • Bulletin of the Korean Chemical Society
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    • 제35권1호
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    • pp.30-34
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    • 2014
  • We report a novel approach for fabricating active surface-enhanced Raman scattering (SERS) substrate for sensitive detection. This approach is based on the assembling of gold nanoparticles (AuNPs) onto the electrospun polycaprolactone (PCL) nanofiber film. The hydrophobic surface of PCL nanofiber film was pretreated using UV-inducing graft polymerization with acrylic acid. Afterwards this PCL nanofiber film was incubated with the AuNP solution to promote the assembly of AuNPs onto the PCL nanofibers and the formation of SERS active substrate. 4-aminothiophenol (4-ATP) molecule was used as a test probe for SERS experiments, indicating that the substrate has high sensitivity to SERS response. Our method has great advantage in term of environment-friendly synthesis, large-scale, high stability and good reproducibility. This highly active SERS substrate can be employed to detect the drug molecule, 2-thiouracil.

Synthesis and fluorescent property investigation of novel fluoroionophores

  • Huang, Zhi Bin;Wang, Zhi Ping;Kang, Tai-Jong;Kwon, Young-Hwan;Kim, Sung-Nam;Chang, Seung-Hyun
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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    • pp.428-429
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    • 2005
  • Novel fluoroionophore of dibenzothiazolyl-dibenzo-crown ethers were synthesized from diformal-dibenzo 18-crown-6 (24-crown-8) with 2-aminothiophenol, and they were characterizated by $^1H$-NMR, $^{13}C$-NMR, IR spectrum, Mass spectrum, elemental analyses, respectively. The fluorescent properties of the newly synthesized crown ether were examined with $Li^+$, $Na^+$, $K^+$, $Rb^+$, $Cs^+$, $NH_4^+$ and $CF_3COOH$, respectively. With protonation using $CF_3COOH$, the absorption bands of the new crown ethers are further blue shifted, the maximum emission wavelengths further red shifted.

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