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有机化合物的同分异构现象既普遍又复杂,它是造成有机物数目庞大的主要原因之一。例如分子式为C_4H_7Cl的同分异构体就多达)2个(不含立体异构体)。因此,对高中生来说,由于刚刚接触有机化学,在求解有机习题时,难免思路窄小,造成遗漏。尤其是对环状结构的同分异构体,更是常常忽略,而近年来的高考试题中,又不乏环状化合物的出现。 为拓宽解题思路,防止遗漏现象,我们应用了有机分子不饱和度(US)这一量化指标,其效果颇佳。
The phenomenon of isomerism of organic compounds is both general and complex. It is one of the major causes of the large number of organic compounds. For example, there are as many as 2 isomers of the formula C_4H_7Cl (without stereoisomers). Therefore, for senior high school students, because they have just come into contact with organic chemistry, when solving organic exercises, it is inevitable that the thinking is narrow, resulting in omissions. Especially for isomers of cyclic structures, it is often overlooked. In recent high test questions, there have been no occurrences of cyclic compounds. In order to broaden the problem-solving ideas and prevent omissions, we applied the quantitative index of organic molecular desaturation (US), and its effect is quite good.