• Title/Summary/Keyword: Indium(III) chloride

Search Result 9, Processing Time 0.023 seconds

One-Pot Synthesis of 2H-Pyrans by Indium(III) Chloride-Catalyzed Reactions.Efficient Synthesis of Pyranocoumarins, Pyranophenalenones, and Pyranoquinolinones

  • Lee, Yong-Rok;Kim, Do-Hoon;Shim, Jae-Jin;Kim, Seog K.;Park, Jung-Hag;Cha, Jin-Soon;Lee, Chong-Soon
    • Bulletin of the Korean Chemical Society
    • /
    • v.23 no.7
    • /
    • pp.998-1002
    • /
    • 2002
  • An efficient synthesis of 2H-pyrans is achieved by indium (III) chloride-catalyzed reactions of 1,3-dicarbonyl compounds with a variety of $\alpha\beta-unsaturated$, aldehydes in moderate yields. This method has been applied to the synthesis of pyranocoumar ins, pyranophenalenones, and pyranoquinolinone alkaloids.

An Efficient Synthesis of Substituted Quinolines via Indium(III) Chloride Catalyzed Reaction of Imines with Alkynes

  • Zhu, Mei;Fu, Weijun;Xun, Chen;Zou, Guanglong
    • Bulletin of the Korean Chemical Society
    • /
    • v.33 no.1
    • /
    • pp.43-47
    • /
    • 2012
  • An efficient synthetic method for the preparation of quinolines through indium(III) chloride-catalyzed tandem addition-cyclization-oxidation reactions of imines with alkynes was developed. The processes can provide a diverse range of quinoline derivatives in good yields from simple imines and alkynes.

A Solid-Contact Indium(III) Sensor based on a Thiosulfinate Ionophore Derived from Omeprazole

  • Abbas, Mohammad Nooredeen;Amer, Hend Samy
    • Bulletin of the Korean Chemical Society
    • /
    • v.34 no.4
    • /
    • pp.1153-1159
    • /
    • 2013
  • A novel solid-contact indium(III)-selective sensor based on bis-(1H-benzimidazole-5-methoxy-2-[(4-methoxy-3, 5-dimethyl-1-pyridinyl) 2-methyl]) thiosulfinate, known as an omeprazole dimer (OD) and a neutral ionophore, was constructed, and its performance characteristics were evaluated. The sensor was prepared by applying a membrane cocktail containing the ionophore to a graphite rod pre-coated with polyethylene dioxythiophene (PEDOT) conducting polymer as the ion-to-electron transducer. The membrane contained 3.6% OD, 2.3% oleic acid (OA) and 62% dioctyl phthalate (DOP) as the solvent mediator in PVC and produced a good potentiometric response to indium(III) ions with a Nernstian slope of 19.09 mV/decade. The constructed sensor possessed a linear concentration range from $3{\times}10^{-7}$ to $1{\times}10^{-2}$ M and a lower detection limit (LDL) of $1{\times}10^{-7}$ M indium(III) over a pH range of 4.0-7.0. It also displayed a fast response time and good selectivity for indium(III) over several other ions. The sensor can be used for longer than three months without any considerable divergence in potential. The sensor was utilized for direct and flow injection potentiometric (FIP) determination of indium(III) in alloys. The parameters that control the flow injection method were optimized. Indium(III) was quantitatively recovered, and the results agreed with those obtained using atomic absorption spectrophotometry, as confirmed by the f and t values. The sensor was also utilized as an indicator electrode for the potentiometric titration of fluoride in the presence of chloride, bromide, iodide and thiocyanate ions using indium(III) nitrate as the titrant.

Effects of post anneal for the INZO films prepared by ultrasonic spray pyrolysis

  • Lan, Wen-How;Li, Yue-Lin;Chung, Yu-Chieh;Yu, Cheng-Chang;Chou, Yi-Chun;Wu, Yi-Da;Huang, Kai-Feng;Chen, Lung-Chien
    • Advances in nano research
    • /
    • v.2 no.4
    • /
    • pp.179-186
    • /
    • 2014
  • Indium-nitrogen co-doped zinc oxide thin films (INZO) were prepared on glass substrates in the atmosphere by ultrasonic spray pyrolysis. The aqueous solution of zinc acetate, ammonium acetate and different indium sources: indium (III) chloride and indium (III) nitrate were used as the precursors. After film deposition, different anneal temperature treatment as 350, 450, $550^{\circ}C$ were applied. Electrical properties as concentration and mobility were characterized by Hall measurement. The surface morphology and crystalline quality were characterized by SEM and XRD. With the activation energy analysis for both films, the concentration variation of the films at different heat treatment temperature was realized. Donors correspond to zinc related states dominate the conduction mechanism for these INZO films after $550^{\circ}C$ high temperature heat treatment process.

Rapid and Efficient Debromination of vic-Dibromides with VCl3/Indium System

  • Yoo, Byung Woo;Park, Jee Yeon;Shin, Hyo Jong
    • Journal of the Korean Chemical Society
    • /
    • v.62 no.4
    • /
    • pp.275-278
    • /
    • 2018
  • The $VCl_3$/In system was found to be a new protocol for debromination of a variety of vic-dibromides to the corresponding alkenes in high yields with short reaction times under mild conditions. This new methodology is highly chemoselective, tolerating several functional groups such as chloro, bromo, fluoro, keto, ester, carboxyl, and methoxy groups.

Electrochemical Formation and Characterization of III-V Compound Semiconductor InSb Nanowires (III-V족 화합물 반도체 InSb 나노와이어의 전기화학적 합성 및 특성 평가)

  • Lee, Kwan-Hyi;Lee, Jong-Wook;Park, Ho-Dong;Jeung, Won-Young;Lee, Jong-Yup
    • Journal of the Korean Electrochemical Society
    • /
    • v.8 no.3
    • /
    • pp.130-134
    • /
    • 2005
  • To the best knowledge, the formation and characterization of InSb nanowires have not been reported yet in spite of its good characteristics as a III-V compound semiconductor. The nanowire arrays were potentiostatically electrodeposited in a mixing solution of indium chloride, antimony chloride, citric acid, and potassium citrate according to our previous work on the electrodeposition of the stoichiometric InSb films. The electrical properties of nanowire arrays were measured by semiconductor parameter analyzer, and the microstructural analysis of the nanowires was conducted by employing XRD. Our experimental results indicate that the InSb nanowires have a highly preferred orientation of (220) direction and also exhibit electrical characteristics of n-type semiconductors which we, however, similar to semi-metals mainly due to their narrow band-gap and high electron mobility.

Indium(III) Chloride Mediated Michael Addition of Indoles to Ketene S,S-Acetals: Synthesis of Bis- and Tris-indolylketones

  • Singh, Thokchom Prasanta;Khan, Ruhima;Noh, Young Ri;Lee, Sang-Gyeong;Singh, Okram Mukherjee
    • Bulletin of the Korean Chemical Society
    • /
    • v.35 no.10
    • /
    • pp.2950-2954
    • /
    • 2014
  • A series of bis and tris-indolylketones and meridianin alkaloids are prepared by one pot Michael reaction of indole and ketene S,S-acetals under solvent-free condition using mild Lewis acid $InCl_3$.

Characterization of In(Al)GaN layer grown by mixed-source hydride vapor phase epitaxy (혼합소스 HVPE에 의해 성장된 In(Al)GaN 층의 특성)

  • Hwang, S.L.;Kim, K.H.;Jang, K.S.;Jeon, H.S.;Choi, W.J.;Chang, J.H.;Kim, H.S.;Yang, M.;Ahn, H.S.;Bae, J.S.;Kim, S.W.
    • Journal of the Korean Crystal Growth and Crystal Technology
    • /
    • v.16 no.4
    • /
    • pp.157-161
    • /
    • 2006
  • InGaN layers on GaN templated sapphire (0001) substrates were grown by mixed-source hydride vapor phase epitaxy (HVPE) method. In order to get InGaN layers, Ga-mixed In metal and $NH_3$ gas were used as group III and group V source materials, respectively. The InGaN material was compounded from chemical reaction between $NH_3$ and indium-gallium chloride farmed by HCl flowed over metallic In mixed with Ga. The grown layers were confirmed to be InGaN ternary crystal alloys by X-ray photoelectron spectroscopy (XPS). In concentration of the InGaN layers grown by selective area growth (SAG) method was investigated by the photoluminescence (PL) and cathodoluminescence (CL) measurements. Indium concentration was estimated to be in the range 3 %. Moreover, as a new attempt in obtaining InAlGaN layers, the growth of the thick InAlGaN layers was performed by putting small amount of Ga and Al into the In source. We found the new results that the metallic In mixed with Ga (and Al) as a group III source material could be used in the growth process of the In(Al)GaN layers by the mixed-source HVPE method.