淡江大學機構典藏:Item 987654321/4423
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62797/95867 (66%)
Visitors : 3741088      Online Users : 539
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU 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: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/4423


    Title: Synthesis and Diazotization of Diethyl 6-Amino-2- hydroxyazulene-1,3-dicarboxylate and Its 2-Acetoxyl Derivative
    Authors: Hunag, Tian-chyuan;Morita, Tadayoshi;Lin, Bing-bing;Lin, Yun-shan
    Contributors: 淡江大學化學學系
    Keywords: 6-Azideazulene;Diazotization;Synthesis;Azulenyl Diazonium Salt;疊氮薁;重氮化;合成;薁基重氮離子鹽
    Date: 1994
    Issue Date: 2013-07-29 13:38:56 (UTC+8)
    Publisher: 臺北市:中國化學學會
    Abstract: Diethyl 6-amino-2-hydroxyazulene-1,3-dicarboxylate(6a) and 2-acetoxyl derivative (6b) were synthesized by reduction of the 6-azido derivatives (5a,b) with zinc/acetic acid in excellent yields. (5a) and (5b) were prepared by azidation of diethyl 2- acetoxy-6-bromoazulene- 1,3-dicarboxylate. Diazotization of (6a) with sodium nitrite in the presence of concentrated sulfuric acid in dioxane gave diethyl 2-hydroxy-, 2,6-dihydroxy-, and 2- hydroxy-6- [ 2-(2-hydroxyethoxy)ethoxy ] -azulene-1,3- dicarboxylates in 5, 35 and 20% yields, respectively. Similar reaction of (6b) gave the corresponding acetates, compounds of the same type from (6a). No evidence for the formation of 6-diazo-1,3-diethoxycarbonyl-2(6H) azulenone was obtained in the employed reaction conditions.
    Relation: Journal of the Chinese Chemical Society=中國化學會會誌 41(2), pp.199-203
    DOI: 10.1002/jccs.199400029
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

    Files in This Item:

    File SizeFormat
    0009-4536_41(2)p199-203.pdf148KbAdobe PDF173View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


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