| 3（或）4—取代苯甲亚氨酸酯中取代基效应的^13C—NMR研究 |
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| 引用本文： | 吴美玉,施耀曾.3（或）4—取代苯甲亚氨酸酯中取代基效应的^13C—NMR研究[J].波谱学杂志,1989,6(4):423-430. |
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| 作者姓名： | 吴美玉 施耀曾 |
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| 作者单位： | 江苏省化工研究所 南京
(吴美玉，雍忠根)，南京大学化学系 南京
(施耀曾，蒋卫平，陆婉芳)，南京大学化学系 南京(胡宏纹) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 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~(13)C-NMR谱。归属了1 和2和各碳化学位移。求得了的取代基化学位移(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C_(2,6)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C_1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σ_(I)/σ_(R)~O和F/M的双参数相关分析。
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| 关 键 词： | 亚氨酸酯 相关分析 取代基化学位移(SCS) 取代基常数 ~(13)C-NMR |
~(13)C-NMR STUDY OF SUBSTITUENT EFFECTS IN 3 (OR 4)-X-BENZENECARBOXIMIDATES |
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| Wu Meiyu and Yong Zhonggen.~(13)C-NMR STUDY OF SUBSTITUENT EFFECTS IN 3 (OR 4)-X-BENZENECARBOXIMIDATES[J].Chinese Journal of Magnetic Resonance,1989,6(4):423-430. |
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| Authors: | Wu Meiyu and Yong Zhonggen |
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| 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 = 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-l in compounds lh-j and 2f--h. Dual subslituent parameter correlations of the 13C chemical shifts were also performed in this paper. |
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| Keywords: | Imidate Correlation analysis Substituent chemical shift (SCS) Substituent constant: (13)~C-NMR |
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