This invention relates to a process for producing a compound of the formula (I) as shown below.
 wherein Q is a condensed heterocyclic group having a nitrogen atom in the bridgehead position which may optionally be substituted, R₁ and R₂ each are an alkyl group, an alkoxy group or halogen and Z is CH or N, or a salt thereof.
The compound (I) or a salt thereof is novel and of value as agricultural chemicals.
According to the process of this invention the compound (I) or a salt thereof can be produced in good yield and high purity.  
                            本发明涉及一种生产下式(I)化合物的工艺。
 其中 Q 是在桥头位置具有一个氮原子的缩合杂环基团,可任选被取代;R₁ 和 R₂ 分别是烷基、烷氧基或卤素;Z 是 CH 或 N,或其盐。
化合物(I)或其盐具有新颖性和农用
化学品的价值。
根据本发明的工艺,可以生产出产率高、纯度高的化合物(I)或其盐。