摘要
以双(三氯甲基)碳酸酯与邻乙氧羰基苯磺酰胺反应生成邻乙氧羰基苯磺酰基异氰酸酯,再与2-氨基-4-氯-6-甲氧基嘧啶反应生成氯嘧磺隆。该工艺具有收率高、含量高和成本低的特点。以邻乙氧羰基苯磺酰胺计,总收率为86.7%,原药纯度达92.12%。
A method for preparation of chlorimuron-ethyl from. Ethyl2-sulfamoylbenzoate and his （trlchloromethyl） carbonate as starting material. Ethyl2-sulfamoylbenzoate reacts with his （trichlommethyl） carbonate to give ethyl2-methoxycar-bonylsulfamoylbenzoate. Chlorimuron-ethyl will be obtained alter reaction of the above product with 2-amino-4-chloro-6-methoxypyrimidine. This is an economica method to prepare chlorimuron-ethyl in high yield and good purity, avoiding the shortcoming of the tradition mute. The total yield reaches 76.7 % based on ethyl2-sulfamoylbenzoate and the purity is 92.12 %.
出处
《山西化工》
2006年第3期11-13,共3页
Shanxi Chemical Industry
关键词
氯嘧磺隆
双(三氯甲基)碳酸酯
豆田
除草剂
合成
chlorimuron-ethyl
his （trichloromethyl） carbonate
soybean
herbicide
compound
