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报道了Ｎ－甲基－４－芳基－２，６－二甲基－３，５－二乙酯基－１，４－二氢吡啶（２ａ＿ ２ｆ）， ４－芳基－２，６－二苯基－３，５－二乙酯基－１，４－二氢吡啶（３ａ＿ ３ｆ）及其相应的Ｎ－甲基化合物（４ａ＿ ４ｆ）的合成（芳基ｐ－ＲＣ６Ｈ４—； Ｒ＝ ＯＣＨ３， ＣＨ３， Ｈ， Ｃｌ， ＣＮ， ＮＯ２）． 化合物４－芳基－２，６－二甲基－３，５－二乙酯基－１，４－二氢吡啶（１ａ＿ １ｆ）可发射较强的荧光， 化合物３ 呈现较弱的荧光， 它们的氮甲基产物２ 和４ 没有荧光． 化合物４ 氮甲基质子的化学位移值比其相对应的化合物２ 氮甲基质子的化学位移值向高场移动０．６～０．７． 化合物３ 的４－位次甲基质子的化学位移变化与同碳苯基对位取代基的σ＋Ｐ 有相当好的关联． 这些现象反映了化合物２—４ 的特征构象．
N-methyl-4-aryl-2,6-dimethyl-3,5-diethyl-1,4-dihydropyridine (2a_ 2f), 4-aryl-2,6- Synthesis of diphenyl-3,5-diethyl-1,4-dihydropyridine (3a_3f) and its corresponding N-methyl compound (4a_4f) (aryl p-RC6H4-; R = OCH3 , CH3, H, Cl, CN, NO2). The compound 4-aryl-2,6-dimethyl-3,5-diethyl-1,4-dihydropyridine (1a_ 1f) emits stronger fluorescence and the compound 3 exhibits weaker fluorescence The N-methyl products 2 and 4 were not fluorescent. The chemical shift of the nitrogen proton of compound 4 was 0.6 ~ 0.7 higher than the corresponding chemical shift of nitrogen proton of compound 2. The chemical shifts of the 4-position methine protons of compound 3 are quite well correlated with σ + P of the para-phenyl phenyl substituent. These phenomena reflect the characteristic conformation of compounds 2-4.