中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/50700
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 66984/66984 (100%)
Visitors : 23176871      Online Users : 464
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50700


    Title: Electronic effects of ruthenium-catalyzed [3+2]-cycloaddition of alkynes and azides
    Authors: Hou,DR;Kuan,TC;Li,YK;Lee,R;Huang,KW
    Contributors: 化學學系
    Keywords: EFFECTIVE CORE POTENTIALS;MOLECULAR-ORBITAL METHODS;GAUSSIAN-TYPE BASIS;CLICK-CHEMISTRY;ORGANIC-MOLECULES;TERMINAL ALKYNES;CYCLOADDITION;1,2,3-TRIAZOLES;FORMULA;SCOPE
    Date: 2010
    Issue Date: 2012-03-27 18:08:13 (UTC+8)
    Publisher: 國立中央大學
    Abstract: A combined experimental and theoretical study of ruthenium-catalyzed azide-alkyne cycloaddition (RuAAC) reactions is presented and various electronic analyses were conducted to provide a basis in understanding the observed regioselectivity of the 1,2,3-triazole products. Computational studies using density functional theory (DFT) and atoms in molecules quantum theory (AIM) further yield fresh details on the electronic factors that determine the regioselectivity in the RuAAC. It is found that the formation of 1,2,3-triazole products is irreversible and from the Hammett study, the pathway involving a vinyl cationic intermediate is ruled out. The electronic effect favors the formation of 5-electron-donating-group substituted-1,2,3-trizoles. (C) 2010 Elsevier Ltd. All rights reserved.
    Relation: TETRAHEDRON
    Appears in Collections:[Department of Chemistry] journal & Dissertation

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML306View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明