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Acetylene Gas

The Experts below are selected from a list of 2502 Experts worldwide ranked by ideXlab platform

B A Trofimov – 1st expert on this subject based on the ideXlab platform

  • kobut dmso mediated α c h vinylation of n benzyl ketimines with Acetylene Gas stereoselective synthesis of e z 2 azadienes
    Organic Letters, 2020
    Co-Authors: Ivan A. Bidusenko, Elena Yu. Schmidt, Igor A. Ushakov, Nadezhda I Protsuk, Alexander V Vashchenko, Andrei V Afonin, B A Trofimov

    Abstract:

    Several imines, readily derived from aryl methyl ketones and benzylamines, react with Acetylene Gas in KOBut/DMSO system to afford 2-azadienes stereoselectively. This new C–C bond constructing reac…

  • site and stereoselective synthesis of bridgehead tetrahydropyrrolo 2 3 c pyridines from ketoximes and Acetylene Gas in two synthetic operations
    Tetrahedron Letters, 2020
    Co-Authors: Dmitrii A Shabalin, Elena Yu. Schmidt, Igor A. Ushakov, Alexander V Vashchenko, A V Kuzmin, B A Trofimov

    Abstract:

    Abstract 3H-Pyrroles, synthesized in one-pot from ketoximes and Acetylene Gas in a KOH/DMSO system, undergo [4 + 2] cyclodimerization in the presence of t-BuOH (closed vessel, autogenic pressure, 140 °C, 8 h) to site- and stereoselectively afford partially hydrogenated bridgehead pyrrolo[2,3-c]pyridines in 15–60% yield. An essential feature of this synthesis is the activating effect of t-BuOH which is attributed to reversible H-bonding of the 3H-pyrroles.

  • toward Acetylene renaissance functionally rich n aminoindoles from Acetylene Gas ketones and hydrazines in two steps
    Organic Letters, 2019
    Co-Authors: Elena Yu. Schmidt, Igor A. Ushakov, Alexander V Vashchenko, Nadezhda V Semenova, Inna V Tatarinova, B A Trofimov

    Abstract:

    A straightforward Acetylene-based scalable strategy for the synthesis of highly functionalized N-aminoindoles has been discovered. This pot-, atom-, step-, and energy-economic strategy includes two simple stages: (i) a one-pot multimolecular (2 + 2) diastereoselective assembly of 6,8-dioxabicyclo[3.2.1]octanes (6,8-DOBCOs) from Acetylene Gas and ketones in the KOH/DMSO two-phase superbase catalytic system and (ii) a mild (rt, CF3COOH) cascade transformation of 6,8-DOBCOs under the action of hydrazines to afford N-(arylamino)-3-(acylpropyl)indoles in good yields.

Yong-min Liang – 2nd expert on this subject based on the ideXlab platform

  • A Convenient Synthesis of 1-Substituted1,2,3-Triazoles via CuI/Et3N Catalyzed ‘ClickChemistry’ from Azides and Acetylene Gas
    Synlett, 2009
    Co-Authors: Lu‐yong Wu, Zi-sheng Chen, Yong-min Liang

    Abstract:

    Copper(I)-catalyzed ‘click chemistry’ using Acetylene Gas was successfully explored under mild conditions. 1-Substituted- 1,2,3-triazoles were conveniently synthesized from the corresponding aromatic and aliphatic azides.

  • a convenient synthesis of 1 substituted1 2 3 triazoles via cui et3n catalyzed clickchemistry from azides and Acetylene Gas
    Synlett, 2009
    Co-Authors: Luyong Wu, Zi-sheng Chen, Yong-min Liang

    Abstract:

    Copper(I)-catalyzed ‘click chemistry’ using Acetylene Gas was successfully explored under mild conditions. 1-Substituted- 1,2,3-triazoles were conveniently synthesized from the corresponding aromatic and aliphatic azides.

Vijay V. Kondalkar – 3rd expert on this subject based on the ideXlab platform

  • Nanohybrids of Pt-Functionalized Al2O3/ZnO Core–Shell Nanorods for High-Performance MEMS-Based Acetylene Gas Sensor
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Vijay V. Kondalkar, Le Thai Duy

    Abstract:

    Metal oxide nanostructures are the most promising materials for the fabrication of advanced Gas sensors. However, the main challenge of these Gas sensors is humidity interference and issues related to the selectivity and high operating temperature, which limits their response in real-time applications. In this study, we proposed nanohybrids of Pt-functionalized Al2O3/ZnOcore–shell nanorods (NRs) for a real-time humidity-independent Acetylene Gas sensor. The core ZnO NRs have been fabricated on microelectromechanical system (MEMS) microheater, followed by a coating of a thin nanoscale moisture-blocking conformal Al2O3 shell by atomic layer deposition (ALD) and decoration of Pt NPs using photochemical deposition and e-beam evaporation. Prior to the fabrication, a COMSOL simulation was performed to optimize the microheater design and moisture-blocking layer thickness. A comparative study of the decoration of Pt NPs on the ZnO surface by photochemical (s-Pt/ZnO) and e-beam evaporation (e-Pt/ZnO) and a Al2O3 t…

  • nanohybrids of pt functionalized al2o3 zno core shell nanorods for high performance mems based Acetylene Gas sensor
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Vijay V. Kondalkar

    Abstract:

    Metal oxide nanostructures are the most promising materials for the fabrication of advanced Gas sensors. However, the main challenge of these Gas sensors is humidity interference and issues related to the selectivity and high operating temperature, which limits their response in real-time applications. In this study, we proposed nanohybrids of Pt-functionalized Al2O3/ZnOcore–shell nanorods (NRs) for a real-time humidity-independent Acetylene Gas sensor. The core ZnO NRs have been fabricated on microelectromechanical system (MEMS) microheater, followed by a coating of a thin nanoscale moisture-blocking conformal Al2O3 shell by atomic layer deposition (ALD) and decoration of Pt NPs using photochemical deposition and e-beam evaporation. Prior to the fabrication, a COMSOL simulation was performed to optimize the microheater design and moisture-blocking layer thickness. A comparative study of the decoration of Pt NPs on the ZnO surface by photochemical (s-Pt/ZnO) and e-beam evaporation (e-Pt/ZnO) and a Al2O3 t…

  • Fabrication of Platinum Functionalized Zinc Oxide Nanorods for High-Performance Acetylene Gas Sensor Integrated with Microheater
    2019 20th International Conference on Solid-State Sensors Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII), 2019
    Co-Authors: Vijay V. Kondalkar

    Abstract:

    The rapidly expanding infrastructure dictates the need for ubiquitous distributed low power, low-cost, high sensitivity Gas sensor. In the past few decades, metal-oxide semiconductors have been investigated widely as Gas sensing materials. However, their low sensitivity and high operating temperature (about 400-500 °C) have significant limitations. To resolve these problems, here, we report the Pt activated ZnO nanorods (NRs) as a highly sensitive material for MEMS compatible miniaturized Acetylene Gas sensor at low operating temperature. Further, before fabrication COMSOL simulation was performed to optimize the micro-heater design. The fabricated Pt functionalized ZnO NRs based sensor exhibits an ultrahigh response toward 1 ppm Acetylene with faster response and recovery compared to state-of-the-art sensing characteristics.