公开(公告)号：US4288594A

公开(公告)日：1981-09-08

申请号：US118375

申请日：1980-02-04

申请人： Philip G. McCracken ,  Hal Myatt ,  Harris E. Petree

发明人： Philip G. McCracken ,  Hal Myatt ,  Harris E. Petree

IPC分类号： C07D251/44 ,  C07D251/50

CPC分类号： C07D251/50 ,  C07D251/44

摘要： A new and improved process is provided for preparing monochloro-diamino-s-triazines which are useful as herbicides.The process comprises reacting in a first stage cyanuric chloride and a selected monoalkylamine hydrochloride at elevated temperature to give a dichloro-monoalkylamino-s-triazine and reacting in a second stage this dichloro-monoalkylamino-s-triazine with an excess of a different monoalkylamine which may be introduced as a pure liquid, as gas or as a solution in water. The third stage of the process consists of an exchange whereby the monoalkylamine hydrochloride of the first stage and the free monoalkylamine of the second stage are generated. The process gives consistent yields in excess of 97% of monochloro-diamino-s-triazines. Because the process is caustic-free and due to the feasibility of recycling the excess of monoalkylamines employed, no serious effluent problems arise.

摘要翻译： 提供了一种新的改进方法，用于制备可用作除草剂的一氯二氨基-s-三嗪。 该方法包括在升高的温度下使第一级氰尿酰氯和选择的单烷基胺盐酸盐反应，得到二氯单烷基氨基-s-三嗪并在第二阶段使该二氯单烷基氨基-s-三嗪与过量的不同的单烷基胺反应， 可以作为纯液体，作为气体或作为在水中的溶液引入。 该方法的第三阶段是由第一阶段的单烷基胺盐酸盐和第二阶段的游离单烷基胺生成的交换体。 该方法得到超过97％的一氯二氨基-s-三嗪的一致收率。 因为该方法是无腐蚀性的，并且由于使用过量的单烷基胺的循环的可行性，所以不会出现严重的流出物问题。