申请人:Sankyo Company Limited
公开号:US04036631A1
公开(公告)日:1977-07-19
Pyrazolone compounds of the formula ##STR1## WHEREIN R.sub.1 represents a hydrogen atom or a lower alkyl group, R.sub.2 represents a lower alkyl group or a lower alkenyl group, X represents a halogen atom, Y represents a halogen atom, a nitro group, a lower alkyl group or a lower alkoxy group, n is an integer of 1 to 3 and when n is 2 or 3, Y's may be the same or different. These compounds are useful as herbicides and obtainable by reacting the corresponding 5-pyrazolone derivatives with a halogenating agent.
式子为 ##STR1## 的吡唑酮化合物,其中 R.sub.1 代表氢原子或较低的烷基团,R.sub.2 代表较低的烷基团或较低的烯基团,X代表卤素原子,Y代表卤素原子、硝基、较低的烷基团或较低的烷氧基,n是1到3的整数,当n为2或3时,Y可以相同或不同。这些化合物可用作除草剂,并可通过将相应的5-吡唑酮衍生物与卤化剂反应得到。