有些有机化学演示实验反应历程较长或实验现象不明显,严重地影响了教学效果。我们本着缩短时间,节约试剂,并能显现出较明显的实验效果的原则,做了一些初浅的探索。现将几个演示实验的实验步骤和经验数据拿出来,供化学教师们参考,并求得斧正,从而把演示实验做得更好。 Some organic chemistry demonstrations have long reaction history or obvious experimental phenomena, which seriously affect the teaching effect. We have made some initial explorations based on the principle of shortening time, saving reagents, and showing more obvious experimental results. The experimental steps and empirical data of several demonstration experiments are now taken out for the reference of the chemistry teachers and the axe is obtained, so that the demonstration experiment can be better.