申请人:Fisons Limited
公开号:US04163846A1
公开(公告)日:1979-08-07
There are provided, as novel herbicides, the substituted pyrazolopyrimidines of the formula: ##STR1## where A represents -CO-NR.sup.6 - or -C(OR.sup.7).dbd.N-, and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.6 and R.sup.7 are substituent groups as defined in the specification, and the salts and acid addition salts thereof. Processes for their preparation are provided, as also are herbicidal compositions containing them and methods of combating weeds in which they are used.
提供了一种新的除草剂,即公式为:##STR1## 的取代的吡唑嘧啶类化合物,其中A代表-CO-NR.sup.6-或-C(OR.sup.7).dbd.N-,R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.6和R.sup.7是规范中定义的取代基团,以及它们的盐和酸加成盐。还提供了其制备方法,以及包含它们的除草剂组合物和使用它们进行除草的方法。