* * * the invention relates to a novel chemical structure formula is H 1, 2, 4 and three of (1, 5 a) pyrimidine - 2 - sulfide compounds, synthesis method and preparation as agricultural herbicide. In the formula R1, R2 is alkyl, alkoxy, aryl, amine, X, alkyl, halogen, nitro n = 0 - 2. The general formula for the use of H compounds on the synthesis reaction, the formula of R1, R2, Xn meaning ibid. The H compounds are obtained by reacting three - (-) - N - (- n) - N - () and substituted phenyl sulfonyl (substituted phenyl) amines in DMF, DMSO, or a solvent such as a ring of two oxygen. The general formula H compound is dissolved in the solvent, and the surface active agent is added, such as GFC, OP - 100204, Twain - 60, etc., and is mixed into a emulsifiable concentrate or a wettable powder according to a certain proportion. The general formula H compound and its preparation of crabgrass, barnyard grass, rape, amaranth has inhibitory effect, especially for amaranth, rape showed good contact effect.
【技术实现步骤摘要】
本专利技术涉及一类化学结构新颖的通式H的1,2,4-三唑并嘧啶-2-硫醚类化合物及其合成方法以及制剂作为农用除草剂。 式中R1,R2为烷基,烷氧基,芳基,胺基等,X为烷基,卤素,硝基n=0-2通式H的化合物采用下述反应合成 式中R1,R2,X的含义同上。H类化合物是经三唑并嘧啶硫醇与取代苯基磺酰(取代苯)胺在DMF,DMSO或二氧六环等溶剂中反应得到。通式H化合物溶于溶剂中,加入表面活性剂,如GFC,OP-10,吐温-60等,按一定比例混匀配制成乳油或可湿性粉剂。通式H化合物及其制剂对马唐,稗草,油菜,苋菜等具有抑制作用,特别是对苋菜,油菜表现出很好的触杀作用。本专利技术可用以下的实例作进一步的说明,但本专利技术并不仅限于这些实例。实例1、中间体3-硝基-4-氯-苯磺酰-(4-氯苯)胺的合成。 在250m1的三口瓶中加入2.56g(0.01mol)3-硝基-4-氯苯磺酰氯,1.4g(0.011mol)的对氯苯胺,10ml的二氧六环和0.5ml的三乙胺在室温下搅拌4个小时,加入10ml水用稀盐酸中和到酸性,搅拌一小时析出沉淀,过滤,水洗,干燥称重得2.82g浅 ...
【技术保护点】
权利要求通式H所示的1,2,4-三唑并[1,5-a]嘧啶-2-硫醚类具有除草活性的化合物,***式中R1,R2为烷基,烷氧基,芳基,胺基等,X为烷基,卤素,硝基,。
【技术特征摘要】
【专利技术属性】
技术研发人员:陈馥衡,任天瑞,周家驹,
申请(专利权)人:中国农业大学,
类型:发明
国别省市:11[中国|北京]
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