English  |  正體中文  |  简体中文  |  Items with full text/Total items : 90074/105197 (86%)
Visitors : 7159344      Online Users : 44
RC Version 6.0 © 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://asiair.asia.edu.tw/ir/handle/310904400/25284


    Title: Selective synthesis of pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl) formamide, or N-(1H-pyrazol-5-yl)formamidine derivatives from N-1-substituted-5-aminopyrazoles with new Vilsmeier-type reagents
    Authors: Chang, Chun-Hsi;蔡建鈞;Tsai, Henry Jan-Jen;Huang, Yu-Ying;Lin, Hui-Yi;Wang, Li-Ya;Wu, Tian-Shung;Wong, Fung Fuh
    Contributors: 保健營養生技學系
    Keywords: Vilsmeier reaction;5-Aminopyrazoles;Pyrazolo[3,4-d]pyrimidine;Formamidine;Formamide
    Date: 2013-01
    Issue Date: 2013-07-11 14:02:22 (UTC+8)
    Abstract: Various halomethyleniminium salts as novel Vilsmeier agents were synthesized from formamide or N-methylformamide with POCl3. Treatment of N-1-substituted-aminopyrazoles including N-1-phenyl-5-aminopyrazoles, N-1-(2-pyridinyl)-5-aminopyrazoles, and N-1-(2-quinolinyl)-5-aminopyrazoles with these agents gave the corresponding pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine. The reaction was different from the traditional Vilsmeier-type reaction and the plausible reactive pathways were proposed for the unexpected result.
    Relation: TETRAHEDRON, 69(4):1378-1386.
    Appears in Collections:[食品營養與保健生技學系] 期刊論文

    Files in This Item:

    File SizeFormat
    index.html0KbHTML183View/Open


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


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback