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在有机化学中,官能团决定物质的性质,对多官能团物质的性质考查,不但能够考查学生对基础知识的掌握情况,而且还能考查学生的自学、信息接受、知识迁移、定性推理与定量计算等综合能力,因而是高考的一个热点. 例1 (2001年全国高考题)某种甜味剂A的甜度是蔗糖的200倍,由于它热值低,口感好,副作用小,已在90多个国家广泛使用,A的结构简式为:
In organic chemistry, functional groups determine the properties of substances, and examination of the properties of multi-functional substances not only allows students to grasp basic knowledge, but also examines students’ self-learning, information acceptance, knowledge transfer, qualitative reasoning, and quantitative calculations. Comprehensive ability, and therefore a hot spot for the college entrance examination. Example 1 (National College Entrance Examination in 2001) The sweetness of a certain sweetener A is 200 times that of sucrose. Due to its low calorific value, good taste, and small side effects, it is already over 90 A wide range of countries, A simple structure: