2—氨基—4，6—二甲氧基嘧啶的合成研究

2－氨基－4，6－二甲氧基嘧啶系高效除草剂的重要中间体之一。它有多种合成方法，经过文献检索，我们选择了环化、氯化、醚化的合成路线。环化收率为95％，氯化收率为78％，醚化收率为75％。成品有效含量可达90％以上。

Synthesis of 2-amino-4,6-dimethoxy pyrimidine

amino-4,6-dimethoxy pyrimidine is one of important intermediates of weed killers.Experiments showed that 2-amino-4,6-dimethoxy pyrimioline was synthesized by cyclization,chloridization,etherification.Yield of cyclization is 95%,yield of chloridization is 78%,Yield of etherification is 75%,Content of 2-amino-4,6-dimethoxy pyrimidine is more than 90%.