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一、分类脱水反应是在催化剂存在下,使化合物分子中相近的两个原子上的羟基和氢原子以水的形式脱去的反应。脱水反应的分类(表1),按脱水方式可分:(1)分子内脱水反应:从一个有机分子中脱去水的反应,因而生成不饱和的或环状的化合物;(2)分子间脱水反应:从两个或几个相同或者不同的有机分子中脱去水的作用,因而生成醚、酯、酸酐、酰胺等的反应。分子间脱水反应又可分为:(1)同分子间脱
First, the classification Dehydration reaction is the reaction in the presence of a catalyst, so that the hydroxyl and hydrogen atoms on two atoms close to the molecule in the compound in the form of water off. Dehydration reaction classification (Table 1), according to the dehydration method can be divided into: (1) intramolecular dehydration reaction: the reaction of water from an organic molecule off, resulting in unsaturated or cyclic compounds; (2) intermolecular Dehydration: The removal of water from two or more of the same or different organic molecules, resulting in the reaction of ethers, esters, anhydrides, amides and the like. Intermolecular dehydration reaction can be divided into: (1) off between the same molecule