在有机化学教学中,消除反应占有较为突出的地位。但在现行的实验教科书和课堂演示实验教材中,这类反应的实验安排极少。我们从活跃课堂教学气氛,加强演示实践,使学生获得较多的感性知识的目的出发,在这方面作了一些工作,并收到了较好的演示效果,现分别介绍如下: In the teaching of organic chemistry, elimination of reactions occupies a more prominent position. However, in the current experimental textbooks and classroom demonstration experiment materials, there are very few experimental arrangements for such reactions. We started from the atmosphere of active classroom teaching, strengthened demonstration practice, and enabled students to acquire more perceptual knowledge. We have done some work in this area and received good demonstration results. We introduce the following as follows: