通过3-甲酰基-7-N,N-二甲基氮杂香豆素(T1)与氨甲基吡啶的缩合反应,生成一个缩醛胺结构化合物NC-1而非席夫碱.通过对比产物分子NC-2~NC-4和结构优化计算研究了该反应的机理,确定了分子内氢键在反应中的稳定作用.光谱测试结果表明,NC-1能够分别与Zn2+,Cd2+和Cu2+作用,产生不同的荧光和吸收光谱变化,现象肉眼可见. By the condensation reaction of 3-formyl-7-N, N-dimethyl azacoumarin (T1) with aminomethyl pyridine, an aminal structure compound NC-1 was obtained instead of Schiff base. The molecular mechanism of the reaction was studied by NC-2 ~ NC-4 and structural optimization calculations, and the intramolecular hydrogen bonding stability was determined. The results of spectroscopy showed that NC-1 could interact with Zn2 +, Cd2 + and Cu2 + , Resulting in different fluorescence and absorption spectrum changes, the phenomenon visible to the naked eye.