English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70588/70588 (100%)
Visitors : 23173467      Online Users : 943
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/987654321/3906

    Title: 2-胺基噻吖唑衍生物合成與其性質之探討
    Authors: 張榮宗;Jung-Tsung Chang
    Contributors: 化學工程與材料工程研究所
    Keywords: 噻吖唑;偶氮染料;吖次甲基染料;azamethine;azo dyes;thiazole
    Date: 2005-07-12
    Issue Date: 2009-09-21 12:25:39 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本研究以酮類化合物與硫尿及碘反應合成五種2-胺基噻吖唑衍生物,並藉由其IR光譜圖來討論各官能基於圖譜上顯示之吸收峰來判斷此類化合物之形成。以2-胺基-4-苯基-1,3-噻吖唑為原料,該化合物之胺基重氮化與二甲基苯胺及γ酸偶合為偶氮染料,也與對二甲基胺苯甲醛在酸性乙醇下反應為吖次甲基染料兩大類。將所合成之染料與苯系染料比較,觀察其可見光譜之最大吸收波長之異同,所得結果噻吖唑系都有紅移現象。其中偶氮染料系在酸性溶液中紅移3~ 77 nm;在鹼性溶液中有沉澱現象,因此有些不能比較;吖次甲基類染料則紅位移波長達267及237 nm。 The five derivatives of 2-aminothiazoles were obtained by reacting with ketone compounds and thiourea, iodine, and identified these com- pound with their several functional groups absorption peak of the IR spectra. Synthesis azo dyes were synthesized from amine of the 2-amino- 4-phenyl-1,3-thiazole diazotize to coupling with N,N-dimethylaniline or gamma acid, also reacted with the 4-Dimethylaminobenzaldehyde to form the azamethine dyes in the acid ethanol solution. Compare and observe the difference between thaizole’s dyestuffs and benzene’s dyestuffs there maximum of the absorptive wavelengths of the visible light, the result of the thaizole’s dyestuffs has been shown the bathochromic shift effect be- tween 3~77 nm in the acid solution, there is phenomenon of precipitating in the base solution, so some can't compare; but azamethine dyestuffs ba- thochromic shift 267 and 237 nm.
    Appears in Collections:[化學工程與材料工程研究所] 博碩士論文

    Files in This Item:

    File SizeFormat

    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