固体光气法合成对称脲的方法研究

The Research on the Synthetic Methods of Symmetrical Urea by Triphosgene

对固体光气合成对称脲的方法(酰氯法和异氰酸酯法)进行了研究。酰氯法,即固体光气先与芳香胺反应生成酰氯,然后再与等量的芳香胺反应生成对称脲;异氰酸酯法是先将固体光气与芳香胺反应生成异氰酸酯,然后再与芳香胺反应生成对称脲。比较了两种方法的优缺点。

Two methods for the synthesis of symmetrical urea with triphosgene have been compared. One way is treating triphosgene with phenylamine to gain chloromide firstly,then adding another equal phenylamine to obtain symmetrical urea. Another way is treating triphosgene with phenylamine to produce isocyanate, then adding another equal phenylamine to obtain symmetrical urea. The advantages and disadvantages of the two methods have been compared.