1.Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.

1.以间硝醛,乙酰乙酸乙,氨化试剂为原料。

2.Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

2.用乙酰乙酸乙法合成了2-庚,总得率为58.9%,纯为98.5%.介绍了2-庚在相关领域中应用.

3.Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

3.本文以紫外光谱为手段研究乙酰乙酸乙-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性增加而减少。