波谱学杂志 ›› 1989, Vol. 6 ›› Issue (4): 423-430.

• 研究论文 • 上一篇    下一篇

3(或)4-取代苯甲亚氨酸酯中取代基效应的13C-NMR研究

吴美玉1, 雍忠根1, 施耀曾2, 蒋卫平2, 陆婉芳2, 胡宏纹2   

  1. 1. 江苏省化工研究所, 南京;
    2. 南京大学化学系, 南京
  • 收稿日期:1988-08-26 修回日期:1988-11-16 出版日期:1989-12-05 发布日期:2018-01-22
  • 基金资助:
    国家自然科学基金资助项目

13C-NMR STUDY OF SUBSTITUENT EFFECTS IN 3 (OR 4)-X-BENZENECARBOXIMIDATES

Wu Meiyu1, Yong Zhonggen1, Shi Yaozeng2, Jiang Weiping2, Lu Wanfang2, Hu Hongwen2   

  1. 1. Institute of Chemical Industry Research of Jiangsu, Nanjing;
    2. Departement of Chemistry, Nanjing University, Nanjing
  • Received:1988-08-26 Revised:1988-11-16 Online:1989-12-05 Published:2018-01-22

摘要: 本文测定了三个3(或4)-取代苯甲亚氨酸乙酯(1)和八个N-氰甲基-3(或4)-取代苯甲亚氨酸乙酯(2)的13C-NMR谱.归属了12和各碳化学位移.求得了-C-OCH2CH3=NCH2CN的取代基化学位移(substituent Chemical Shift,SCS).碳-13化学位移与单取代苯的取代基化学位移(SCS)的相关分析表明:4-取代苯甲亚氨酸酯1 b~g和2b~e中,除C2,6外,其他各芳碳的化学位移值与加和规则基本相符;3-取代苯甲亚氨酸酯1h~j和2f~h中,除C1外,其他各芳碳的化学位移值与加和规则基本相符.另外,本文还进行了碳-13化学位移与σI/σRo和F/M的双参数相关分析.

关键词: 亚氨酸酯, 相关分析, 取代基化学位移(SCS), 取代基常数, 13C-NMR

Abstract: The 13C-NMR spectra of three ethyl 3 (or 4)-x-benzenecarboximidates (1) and eight ethyl N-cyanomethyl-3 (or 4)-x-benzenecarboximidates (2) were determined. All 13C chemical shifts were assigned. The substituent chemical shifts (SCS) of -C-OCH2CH3=NCH2CN was obtained. Correlations of the 13C chemical shifts of aromatic carbons with the appropriate substituent chemical shifts (SCS) for monosubstituted benzenes show nonadditivity at C-2, 6 in compounds lb-g and 2b-e, at C-1 in compounds 1h-j and 2f-h. Dual subslituent parameter correlations of the 13C chemical shifts were also performed in this paper.

Key words: Imidate, Correlation analysis, Substituent chemical shift (SCS), Substituent constant:13C-NMR